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Finding the Fourth Proportional to 125,902.80, 188,810.68 and 55,831.12

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Solution

The fourth proportional to 125,902.80, 188,810.68 and 55,831.12 is: 83,727.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,902.80 : 188,810.68 = 55,831.12 : x
  2. Step 2: Convert to fraction form
    125,902.80/188,810.68 = 55,831.12/x
  3. Step 3: Cross multiply
    125,902.80x = 188,810.68 × 55,831.12
  4. Step 4: Simplify right side
    125,902.80x = 10,541,511,732.36
  5. Step 5: Solve for x
    x = 10,541,511,732.36/125,902.80
  6. Step 6: Final answer
    x = 83,727.38

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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.