Home / 131,780.17-181,856.36-71,350.87

Finding the Fourth Proportional to 131,780.17, 181,856.36 and 71,350.87

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Solution

The fourth proportional to 131,780.17, 181,856.36 and 71,350.87 is: 98,464.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,780.17 : 181,856.36 = 71,350.87 : x
  2. Step 2: Convert to fraction form
    131,780.17/181,856.36 = 71,350.87/x
  3. Step 3: Cross multiply
    131,780.17x = 181,856.36 × 71,350.87
  4. Step 4: Simplify right side
    131,780.17x = 12,975,609,501.03
  5. Step 5: Solve for x
    x = 12,975,609,501.03/131,780.17
  6. Step 6: Final answer
    x = 98,464.05

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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.