Home / 266,721.78-399,999.61-89,187.27

Finding the Fourth Proportional to 266,721.78, 399,999.61 and 89,187.27

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Solution

The fourth proportional to 266,721.78, 399,999.61 and 89,187.27 is: 133,753.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,721.78 : 399,999.61 = 89,187.27 : x
  2. Step 2: Convert to fraction form
    266,721.78/399,999.61 = 89,187.27/x
  3. Step 3: Cross multiply
    266,721.78x = 399,999.61 × 89,187.27
  4. Step 4: Simplify right side
    266,721.78x = 35,674,873,216.96
  5. Step 5: Solve for x
    x = 35,674,873,216.96/266,721.78
  6. Step 6: Final answer
    x = 133,753.13

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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.