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Finding the Fourth Proportional to 103,029.92, 142,131.12 and 67,203.68

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Solution

The fourth proportional to 103,029.92, 142,131.12 and 67,203.68 is: 92,708.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,029.92 : 142,131.12 = 67,203.68 : x
  2. Step 2: Convert to fraction form
    103,029.92/142,131.12 = 67,203.68/x
  3. Step 3: Cross multiply
    103,029.92x = 142,131.12 × 67,203.68
  4. Step 4: Simplify right side
    103,029.92x = 9,551,734,306.52
  5. Step 5: Solve for x
    x = 9,551,734,306.52/103,029.92
  6. Step 6: Final answer
    x = 92,708.35

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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.