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Finding the Fourth Proportional to 103,179, 142,387.08 and 60,763.68

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Solution

The fourth proportional to 103,179, 142,387.08 and 60,763.68 is: 83,853.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,179 : 142,387.08 = 60,763.68 : x
  2. Step 2: Convert to fraction form
    103,179/142,387.08 = 60,763.68/x
  3. Step 3: Cross multiply
    103,179x = 142,387.08 × 60,763.68
  4. Step 4: Simplify right side
    103,179x = 8,651,962,965.25
  5. Step 5: Solve for x
    x = 8,651,962,965.25/103,179
  6. Step 6: Final answer
    x = 83,853.91

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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.