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Finding the Fourth Proportional to 135,479.73, 186,967.32 and 75,049.20

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Solution

The fourth proportional to 135,479.73, 186,967.32 and 75,049.20 is: 103,570.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,479.73 : 186,967.32 = 75,049.20 : x
  2. Step 2: Convert to fraction form
    135,479.73/186,967.32 = 75,049.20/x
  3. Step 3: Cross multiply
    135,479.73x = 186,967.32 × 75,049.20
  4. Step 4: Simplify right side
    135,479.73x = 14,031,747,792.14
  5. Step 5: Solve for x
    x = 14,031,747,792.14/135,479.73
  6. Step 6: Final answer
    x = 103,570.83

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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.