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Finding the Fourth Proportional to 135,508.50, 187,001.73 and 75,892.50

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Solution

The fourth proportional to 135,508.50, 187,001.73 and 75,892.50 is: 104,731.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,508.50 : 187,001.73 = 75,892.50 : x
  2. Step 2: Convert to fraction form
    135,508.50/187,001.73 = 75,892.50/x
  3. Step 3: Cross multiply
    135,508.50x = 187,001.73 × 75,892.50
  4. Step 4: Simplify right side
    135,508.50x = 14,192,028,794.03
  5. Step 5: Solve for x
    x = 14,192,028,794.03/135,508.50
  6. Step 6: Final answer
    x = 104,731.65

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1.5x scale

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.