Home / 131,931.74-182,034.08-78,229.96

Finding the Fourth Proportional to 131,931.74, 182,034.08 and 78,229.96

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Solution

The fourth proportional to 131,931.74, 182,034.08 and 78,229.96 is: 107,938.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,931.74 : 182,034.08 = 78,229.96 : x
  2. Step 2: Convert to fraction form
    131,931.74/182,034.08 = 78,229.96/x
  3. Step 3: Cross multiply
    131,931.74x = 182,034.08 × 78,229.96
  4. Step 4: Simplify right side
    131,931.74x = 14,240,518,797.04
  5. Step 5: Solve for x
    x = 14,240,518,797.04/131,931.74
  6. Step 6: Final answer
    x = 107,938.54

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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.