Home / 117,324.72-161,909.04-66,335.28

Finding the Fourth Proportional to 117,324.72, 161,909.04 and 66,335.28

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Solution

The fourth proportional to 117,324.72, 161,909.04 and 66,335.28 is: 91,543.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,324.72 : 161,909.04 = 66,335.28 : x
  2. Step 2: Convert to fraction form
    117,324.72/161,909.04 = 66,335.28/x
  3. Step 3: Cross multiply
    117,324.72x = 161,909.04 × 66,335.28
  4. Step 4: Simplify right side
    117,324.72x = 10,740,281,502.93
  5. Step 5: Solve for x
    x = 10,740,281,502.93/117,324.72
  6. Step 6: Final answer
    x = 91,543.21

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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.