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Finding the Fourth Proportional to 98,999.40, 148,499.10 and 54,603.30

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Solution

The fourth proportional to 98,999.40, 148,499.10 and 54,603.30 is: 81,904.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,999.40 : 148,499.10 = 54,603.30 : x
  2. Step 2: Convert to fraction form
    98,999.40/148,499.10 = 54,603.30/x
  3. Step 3: Cross multiply
    98,999.40x = 148,499.10 × 54,603.30
  4. Step 4: Simplify right side
    98,999.40x = 8,108,540,907.03
  5. Step 5: Solve for x
    x = 8,108,540,907.03/98,999.40
  6. Step 6: Final answer
    x = 81,904.95

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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.