Home / 100,757.28-139,042.80-58,314.96

Finding the Fourth Proportional to 100,757.28, 139,042.80 and 58,314.96

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Solution

The fourth proportional to 100,757.28, 139,042.80 and 58,314.96 is: 80,473.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,757.28 : 139,042.80 = 58,314.96 : x
  2. Step 2: Convert to fraction form
    100,757.28/139,042.80 = 58,314.96/x
  3. Step 3: Cross multiply
    100,757.28x = 139,042.80 × 58,314.96
  4. Step 4: Simplify right side
    100,757.28x = 8,108,275,320.29
  5. Step 5: Solve for x
    x = 8,108,275,320.29/100,757.28
  6. Step 6: Final answer
    x = 80,473.34

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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.