Home / 142,182,000.30-213,273,000.45-80,747,420.70

Finding the Fourth Proportional to 142,182,000.30, 213,273,000.45 and 80,747,420.70

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Solution

The fourth proportional to 142,182,000.30, 213,273,000.45 and 80,747,420.70 is: 121,121,131.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,182,000.30 : 213,273,000.45 = 80,747,420.70 : x
  2. Step 2: Convert to fraction form
    142,182,000.30/213,273,000.45 = 80,747,420.70/x
  3. Step 3: Cross multiply
    142,182,000.30x = 213,273,000.45 × 80,747,420.70
  4. Step 4: Simplify right side
    142,182,000.30x = 17,221,244,691,287,438
  5. Step 5: Solve for x
    x = 17,221,244,691,287,438/142,182,000.30
  6. Step 6: Final answer
    x = 121,121,131.05

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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.