Home / 109,553.13-164,387.55-77,737.78

Finding the Fourth Proportional to 109,553.13, 164,387.55 and 77,737.78

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Solution

The fourth proportional to 109,553.13, 164,387.55 and 77,737.78 is: 116,647.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,553.13 : 164,387.55 = 77,737.78 : x
  2. Step 2: Convert to fraction form
    109,553.13/164,387.55 = 77,737.78/x
  3. Step 3: Cross multiply
    109,553.13x = 164,387.55 × 77,737.78
  4. Step 4: Simplify right side
    109,553.13x = 12,779,123,801.95
  5. Step 5: Solve for x
    x = 12,779,123,801.95/109,553.13
  6. Step 6: Final answer
    x = 116,647.73

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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.