Home / 102,768.39-141,819.87-57,446.31

Finding the Fourth Proportional to 102,768.39, 141,819.87 and 57,446.31

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Solution

The fourth proportional to 102,768.39, 141,819.87 and 57,446.31 is: 79,275.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,768.39 : 141,819.87 = 57,446.31 : x
  2. Step 2: Convert to fraction form
    102,768.39/141,819.87 = 57,446.31/x
  3. Step 3: Cross multiply
    102,768.39x = 141,819.87 × 57,446.31
  4. Step 4: Simplify right side
    102,768.39x = 8,147,028,216.18
  5. Step 5: Solve for x
    x = 8,147,028,216.18/102,768.39
  6. Step 6: Final answer
    x = 79,275.62

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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.