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Finding the Fourth Proportional to 100,352, 138,490.08 and 60,058.10

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Solution

The fourth proportional to 100,352, 138,490.08 and 60,058.10 is: 82,882.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,352 : 138,490.08 = 60,058.10 : x
  2. Step 2: Convert to fraction form
    100,352/138,490.08 = 60,058.10/x
  3. Step 3: Cross multiply
    100,352x = 138,490.08 × 60,058.10
  4. Step 4: Simplify right side
    100,352x = 8,317,451,073.65
  5. Step 5: Solve for x
    x = 8,317,451,073.65/100,352
  6. Step 6: Final answer
    x = 82,882.76

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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.