Home / 131,939.76-182,078.88-75,351.24

Finding the Fourth Proportional to 131,939.76, 182,078.88 and 75,351.24

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Solution

The fourth proportional to 131,939.76, 182,078.88 and 75,351.24 is: 103,985.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,939.76 : 182,078.88 = 75,351.24 : x
  2. Step 2: Convert to fraction form
    131,939.76/182,078.88 = 75,351.24/x
  3. Step 3: Cross multiply
    131,939.76x = 182,078.88 × 75,351.24
  4. Step 4: Simplify right side
    131,939.76x = 13,719,869,385.81
  5. Step 5: Solve for x
    x = 13,719,869,385.81/131,939.76
  6. Step 6: Final answer
    x = 103,985.86

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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.