Home / 131,780.04-181,856.20-71,350.74

Finding the Fourth Proportional to 131,780.04, 181,856.20 and 71,350.74

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Solution

The fourth proportional to 131,780.04, 181,856.20 and 71,350.74 is: 98,463.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,780.04 : 181,856.20 = 71,350.74 : x
  2. Step 2: Convert to fraction form
    131,780.04/181,856.20 = 71,350.74/x
  3. Step 3: Cross multiply
    131,780.04x = 181,856.20 × 71,350.74
  4. Step 4: Simplify right side
    131,780.04x = 12,975,574,443.59
  5. Step 5: Solve for x
    x = 12,975,574,443.59/131,780.04
  6. Step 6: Final answer
    x = 98,463.88

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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.