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Finding the Fourth Proportional to 125,234.87, 172,831.19 and 74,277.77

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Solution

The fourth proportional to 125,234.87, 172,831.19 and 74,277.77 is: 102,507.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,234.87 : 172,831.19 = 74,277.77 : x
  2. Step 2: Convert to fraction form
    125,234.87/172,831.19 = 74,277.77/x
  3. Step 3: Cross multiply
    125,234.87x = 172,831.19 × 74,277.77
  4. Step 4: Simplify right side
    125,234.87x = 12,837,514,144.10
  5. Step 5: Solve for x
    x = 12,837,514,144.10/125,234.87
  6. Step 6: Final answer
    x = 102,507.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.