Home / 131,866.96-181,976.18-71,439.13

Finding the Fourth Proportional to 131,866.96, 181,976.18 and 71,439.13

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Solution

The fourth proportional to 131,866.96, 181,976.18 and 71,439.13 is: 98,585.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,866.96 : 181,976.18 = 71,439.13 : x
  2. Step 2: Convert to fraction form
    131,866.96/181,976.18 = 71,439.13/x
  3. Step 3: Cross multiply
    131,866.96x = 181,976.18 × 71,439.13
  4. Step 4: Simplify right side
    131,866.96x = 13,000,219,979.92
  5. Step 5: Solve for x
    x = 13,000,219,979.92/131,866.96
  6. Step 6: Final answer
    x = 98,585.88

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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.