Home / 120,862,861.20-181,294,291.80-84,512,296.80

Finding the Fourth Proportional to 120,862,861.20, 181,294,291.80 and 84,512,296.80

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Solution

The fourth proportional to 120,862,861.20, 181,294,291.80 and 84,512,296.80 is: 126,768,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,862,861.20 : 181,294,291.80 = 84,512,296.80 : x
  2. Step 2: Convert to fraction form
    120,862,861.20/181,294,291.80 = 84,512,296.80/x
  3. Step 3: Cross multiply
    120,862,861.20x = 181,294,291.80 × 84,512,296.80
  4. Step 4: Simplify right side
    120,862,861.20x = 15,321,596,996,747,406
  5. Step 5: Solve for x
    x = 15,321,596,996,747,406/120,862,861.20
  6. Step 6: Final answer
    x = 126,768,445.20

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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.