Home / 102,458.87-141,393.85-57,139.72

Finding the Fourth Proportional to 102,458.87, 141,393.85 and 57,139.72

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Solution

The fourth proportional to 102,458.87, 141,393.85 and 57,139.72 is: 78,853.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,458.87 : 141,393.85 = 57,139.72 : x
  2. Step 2: Convert to fraction form
    102,458.87/141,393.85 = 57,139.72/x
  3. Step 3: Cross multiply
    102,458.87x = 141,393.85 × 57,139.72
  4. Step 4: Simplify right side
    102,458.87x = 8,079,204,148.90
  5. Step 5: Solve for x
    x = 8,079,204,148.90/102,458.87
  6. Step 6: Final answer
    x = 78,853.15

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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.