Home / 124,761.50-172,161.55-76,343.65

Finding the Fourth Proportional to 124,761.50, 172,161.55 and 76,343.65

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Solution

The fourth proportional to 124,761.50, 172,161.55 and 76,343.65 is: 105,348.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,761.50 : 172,161.55 = 76,343.65 : x
  2. Step 2: Convert to fraction form
    124,761.50/172,161.55 = 76,343.65/x
  3. Step 3: Cross multiply
    124,761.50x = 172,161.55 × 76,343.65
  4. Step 4: Simplify right side
    124,761.50x = 13,143,440,781.68
  5. Step 5: Solve for x
    x = 13,143,440,781.68/124,761.50
  6. Step 6: Final answer
    x = 105,348.53

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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.