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Finding the Fourth Proportional to 134,642.76, 185,805.97 and 74,213.52

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Solution

The fourth proportional to 134,642.76, 185,805.97 and 74,213.52 is: 102,414.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,642.76 : 185,805.97 = 74,213.52 : x
  2. Step 2: Convert to fraction form
    134,642.76/185,805.97 = 74,213.52/x
  3. Step 3: Cross multiply
    134,642.76x = 185,805.97 × 74,213.52
  4. Step 4: Simplify right side
    134,642.76x = 13,789,315,070.71
  5. Step 5: Solve for x
    x = 13,789,315,070.71/134,642.76
  6. Step 6: Final answer
    x = 102,414.09

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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.