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Finding the Fourth Proportional to 100,328.54, 138,454.95 and 60,044.00

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Solution

The fourth proportional to 100,328.54, 138,454.95 and 60,044.00 is: 82,861.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,328.54 : 138,454.95 = 60,044.00 : x
  2. Step 2: Convert to fraction form
    100,328.54/138,454.95 = 60,044.00/x
  3. Step 3: Cross multiply
    100,328.54x = 138,454.95 × 60,044.00
  4. Step 4: Simplify right side
    100,328.54x = 8,313,388,325.53
  5. Step 5: Solve for x
    x = 8,313,388,325.53/100,328.54
  6. Step 6: Final answer
    x = 82,861.65

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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.