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Finding the Fourth Proportional to 125,757.29, 188,686.34 and 45,800.83

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Solution

The fourth proportional to 125,757.29, 188,686.34 and 45,800.83 is: 68,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,757.29 : 188,686.34 = 45,800.83 : x
  2. Step 2: Convert to fraction form
    125,757.29/188,686.34 = 45,800.83/x
  3. Step 3: Cross multiply
    125,757.29x = 188,686.34 × 45,800.83
  4. Step 4: Simplify right side
    125,757.29x = 8,641,990,981.66
  5. Step 5: Solve for x
    x = 8,641,990,981.66/125,757.29
  6. Step 6: Final answer
    x = 68,719.60

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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.