Home / 131,987.52-182,062.13-78,236.55

Finding the Fourth Proportional to 131,987.52, 182,062.13 and 78,236.55

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Solution

The fourth proportional to 131,987.52, 182,062.13 and 78,236.55 is: 107,918.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,987.52 : 182,062.13 = 78,236.55 : x
  2. Step 2: Convert to fraction form
    131,987.52/182,062.13 = 78,236.55/x
  3. Step 3: Cross multiply
    131,987.52x = 182,062.13 × 78,236.55
  4. Step 4: Simplify right side
    131,987.52x = 14,243,912,545.67
  5. Step 5: Solve for x
    x = 14,243,912,545.67/131,987.52
  6. Step 6: Final answer
    x = 107,918.63

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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.