Home / 107,761.11-148,778.42-79,417.43

Finding the Fourth Proportional to 107,761.11, 148,778.42 and 79,417.43

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Solution

The fourth proportional to 107,761.11, 148,778.42 and 79,417.43 is: 109,646.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,761.11 : 148,778.42 = 79,417.43 : x
  2. Step 2: Convert to fraction form
    107,761.11/148,778.42 = 79,417.43/x
  3. Step 3: Cross multiply
    107,761.11x = 148,778.42 × 79,417.43
  4. Step 4: Simplify right side
    107,761.11x = 11,815,599,358.77
  5. Step 5: Solve for x
    x = 11,815,599,358.77/107,761.11
  6. Step 6: Final answer
    x = 109,646.23

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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.