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Finding the Fourth Proportional to 125,178.77, 187,768.29 and 31,684.52

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Solution

The fourth proportional to 125,178.77, 187,768.29 and 31,684.52 is: 47,526.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,178.77 : 187,768.29 = 31,684.52 : x
  2. Step 2: Convert to fraction form
    125,178.77/187,768.29 = 31,684.52/x
  3. Step 3: Cross multiply
    125,178.77x = 187,768.29 × 31,684.52
  4. Step 4: Simplify right side
    125,178.77x = 5,949,347,201.03
  5. Step 5: Solve for x
    x = 5,949,347,201.03/125,178.77
  6. Step 6: Final answer
    x = 47,526.81

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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.