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Finding the Fourth Proportional to 100,737.80, 151,223.10 and 54,081.80

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Solution

The fourth proportional to 100,737.80, 151,223.10 and 54,081.80 is: 81,185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,737.80 : 151,223.10 = 54,081.80 : x
  2. Step 2: Convert to fraction form
    100,737.80/151,223.10 = 54,081.80/x
  3. Step 3: Cross multiply
    100,737.80x = 151,223.10 × 54,081.80
  4. Step 4: Simplify right side
    100,737.80x = 8,178,417,449.58
  5. Step 5: Solve for x
    x = 8,178,417,449.58/100,737.80
  6. Step 6: Final answer
    x = 81,185.19

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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.