Home / 102,342.60-141,243.12-57,020.76

Finding the Fourth Proportional to 102,342.60, 141,243.12 and 57,020.76

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Solution

The fourth proportional to 102,342.60, 141,243.12 and 57,020.76 is: 78,694.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,342.60 : 141,243.12 = 57,020.76 : x
  2. Step 2: Convert to fraction form
    102,342.60/141,243.12 = 57,020.76/x
  3. Step 3: Cross multiply
    102,342.60x = 141,243.12 × 57,020.76
  4. Step 4: Simplify right side
    102,342.60x = 8,053,790,047.17
  5. Step 5: Solve for x
    x = 8,053,790,047.17/102,342.60
  6. Step 6: Final answer
    x = 78,694.41

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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.