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Finding the Fourth Proportional to 180,998,125.80, 271,497,188.70 and 65,986,420.20

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Solution

The fourth proportional to 180,998,125.80, 271,497,188.70 and 65,986,420.20 is: 98,979,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,998,125.80 : 271,497,188.70 = 65,986,420.20 : x
  2. Step 2: Convert to fraction form
    180,998,125.80/271,497,188.70 = 65,986,420.20/x
  3. Step 3: Cross multiply
    180,998,125.80x = 271,497,188.70 × 65,986,420.20
  4. Step 4: Simplify right side
    180,998,125.80x = 17,915,127,576,676,892
  5. Step 5: Solve for x
    x = 17,915,127,576,676,892/180,998,125.80
  6. Step 6: Final answer
    x = 98,979,630.30

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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.