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Finding the Fourth Proportional to 99,651,648.30, 149,477,472.45 and 74,142,480.30

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Solution

The fourth proportional to 99,651,648.30, 149,477,472.45 and 74,142,480.30 is: 111,213,720.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,651,648.30 : 149,477,472.45 = 74,142,480.30 : x
  2. Step 2: Convert to fraction form
    99,651,648.30/149,477,472.45 = 74,142,480.30/x
  3. Step 3: Cross multiply
    99,651,648.30x = 149,477,472.45 × 74,142,480.30
  4. Step 4: Simplify right side
    99,651,648.30x = 11,082,630,556,417,916
  5. Step 5: Solve for x
    x = 11,082,630,556,417,916/99,651,648.30
  6. Step 6: Final answer
    x = 111,213,720.45

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.