Home / 72,695,008.20-109,101,998.70-72,128,137.80

Finding the Fourth Proportional to 72,695,008.20, 109,101,998.70 and 72,128,137.80

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Solution

The fourth proportional to 72,695,008.20, 109,101,998.70 and 72,128,137.80 is: 108,251,229.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,695,008.20 : 109,101,998.70 = 72,128,137.80 : x
  2. Step 2: Convert to fraction form
    72,695,008.20/109,101,998.70 = 72,128,137.80/x
  3. Step 3: Cross multiply
    72,695,008.20x = 109,101,998.70 × 72,128,137.80
  4. Step 4: Simplify right side
    72,695,008.20x = 7,869,323,996,489,021
  5. Step 5: Solve for x
    x = 7,869,323,996,489,021/72,695,008.20
  6. Step 6: Final answer
    x = 108,251,229.23

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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.