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Finding the Fourth Proportional to 125,309.95, 187,673.10 and 75,279.59

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Solution

The fourth proportional to 125,309.95, 187,673.10 and 75,279.59 is: 112,744.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,309.95 : 187,673.10 = 75,279.59 : x
  2. Step 2: Convert to fraction form
    125,309.95/187,673.10 = 75,279.59/x
  3. Step 3: Cross multiply
    125,309.95x = 187,673.10 × 75,279.59
  4. Step 4: Simplify right side
    125,309.95x = 14,127,954,984.25
  5. Step 5: Solve for x
    x = 14,127,954,984.25/125,309.95
  6. Step 6: Final answer
    x = 112,744.08

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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.