Home / 122,239.72-168,691.43-71,287.79

Finding the Fourth Proportional to 122,239.72, 168,691.43 and 71,287.79

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Solution

The fourth proportional to 122,239.72, 168,691.43 and 71,287.79 is: 98,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,239.72 : 168,691.43 = 71,287.79 : x
  2. Step 2: Convert to fraction form
    122,239.72/168,691.43 = 71,287.79/x
  3. Step 3: Cross multiply
    122,239.72x = 168,691.43 × 71,287.79
  4. Step 4: Simplify right side
    122,239.72x = 12,025,638,880.20
  5. Step 5: Solve for x
    x = 12,025,638,880.20/122,239.72
  6. Step 6: Final answer
    x = 98,377.51

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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.