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Finding the Fourth Proportional to 99,898.80, 149,848.20 and 55,504.32

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Solution

The fourth proportional to 99,898.80, 149,848.20 and 55,504.32 is: 83,256.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,898.80 : 149,848.20 = 55,504.32 : x
  2. Step 2: Convert to fraction form
    99,898.80/149,848.20 = 55,504.32/x
  3. Step 3: Cross multiply
    99,898.80x = 149,848.20 × 55,504.32
  4. Step 4: Simplify right side
    99,898.80x = 8,317,222,444.22
  5. Step 5: Solve for x
    x = 8,317,222,444.22/99,898.80
  6. Step 6: Final answer
    x = 83,256.48

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Similar ratio
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1.5x scale

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.