Home / 121,760.38-182,345.32-84,215.08

Finding the Fourth Proportional to 121,760.38, 182,345.32 and 84,215.08

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Solution

The fourth proportional to 121,760.38, 182,345.32 and 84,215.08 is: 126,118.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,760.38 : 182,345.32 = 84,215.08 : x
  2. Step 2: Convert to fraction form
    121,760.38/182,345.32 = 84,215.08/x
  3. Step 3: Cross multiply
    121,760.38x = 182,345.32 × 84,215.08
  4. Step 4: Simplify right side
    121,760.38x = 15,356,225,711.43
  5. Step 5: Solve for x
    x = 15,356,225,711.43/121,760.38
  6. Step 6: Final answer
    x = 126,118.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.