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Finding the Fourth Proportional to 125,356.54, 187,858.02 and 69,221.92

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Solution

The fourth proportional to 125,356.54, 187,858.02 and 69,221.92 is: 103,735.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,356.54 : 187,858.02 = 69,221.92 : x
  2. Step 2: Convert to fraction form
    125,356.54/187,858.02 = 69,221.92/x
  3. Step 3: Cross multiply
    125,356.54x = 187,858.02 × 69,221.92
  4. Step 4: Simplify right side
    125,356.54x = 13,003,892,831.80
  5. Step 5: Solve for x
    x = 13,003,892,831.80/125,356.54
  6. Step 6: Final answer
    x = 103,735.26

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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.