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Finding the Fourth Proportional to 129,857.88, 179,214.81 and 73,280.19

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Solution

The fourth proportional to 129,857.88, 179,214.81 and 73,280.19 is: 101,132.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,857.88 : 179,214.81 = 73,280.19 : x
  2. Step 2: Convert to fraction form
    129,857.88/179,214.81 = 73,280.19/x
  3. Step 3: Cross multiply
    129,857.88x = 179,214.81 × 73,280.19
  4. Step 4: Simplify right side
    129,857.88x = 13,132,895,327.61
  5. Step 5: Solve for x
    x = 13,132,895,327.61/129,857.88
  6. Step 6: Final answer
    x = 101,132.83

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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.