Home / 121,142.43-181,714.33-107,876.91

Finding the Fourth Proportional to 121,142.43, 181,714.33 and 107,876.91

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Solution

The fourth proportional to 121,142.43, 181,714.33 and 107,876.91 is: 161,815.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,142.43 : 181,714.33 = 107,876.91 : x
  2. Step 2: Convert to fraction form
    121,142.43/181,714.33 = 107,876.91/x
  3. Step 3: Cross multiply
    121,142.43x = 181,714.33 × 107,876.91
  4. Step 4: Simplify right side
    121,142.43x = 19,602,780,423.12
  5. Step 5: Solve for x
    x = 19,602,780,423.12/121,142.43
  6. Step 6: Final answer
    x = 161,815.97

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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.