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Finding the Fourth Proportional to 125,507.88, 188,256.06 and 42,402.60

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Solution

The fourth proportional to 125,507.88, 188,256.06 and 42,402.60 is: 63,601.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,507.88 : 188,256.06 = 42,402.60 : x
  2. Step 2: Convert to fraction form
    125,507.88/188,256.06 = 42,402.60/x
  3. Step 3: Cross multiply
    125,507.88x = 188,256.06 × 42,402.60
  4. Step 4: Simplify right side
    125,507.88x = 7,982,546,409.76
  5. Step 5: Solve for x
    x = 7,982,546,409.76/125,507.88
  6. Step 6: Final answer
    x = 63,601.95

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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.