Home / 103,599.08-142,979.38-58,278.97

Finding the Fourth Proportional to 103,599.08, 142,979.38 and 58,278.97

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Solution

The fourth proportional to 103,599.08, 142,979.38 and 58,278.97 is: 80,432.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,599.08 : 142,979.38 = 58,278.97 : x
  2. Step 2: Convert to fraction form
    103,599.08/142,979.38 = 58,278.97/x
  3. Step 3: Cross multiply
    103,599.08x = 142,979.38 × 58,278.97
  4. Step 4: Simplify right side
    103,599.08x = 8,332,690,997.64
  5. Step 5: Solve for x
    x = 8,332,690,997.64/103,599.08
  6. Step 6: Final answer
    x = 80,432.09

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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.