Home / 120,133.20-165,818.42-79,327.13

Finding the Fourth Proportional to 120,133.20, 165,818.42 and 79,327.13

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Solution

The fourth proportional to 120,133.20, 165,818.42 and 79,327.13 is: 109,494.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,133.20 : 165,818.42 = 79,327.13 : x
  2. Step 2: Convert to fraction form
    120,133.20/165,818.42 = 79,327.13/x
  3. Step 3: Cross multiply
    120,133.20x = 165,818.42 × 79,327.13
  4. Step 4: Simplify right side
    120,133.20x = 13,153,898,134.01
  5. Step 5: Solve for x
    x = 13,153,898,134.01/120,133.20
  6. Step 6: Final answer
    x = 109,494.28

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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.