Home / 124,781.45-172,198.42-71,071.47

Finding the Fourth Proportional to 124,781.45, 172,198.42 and 71,071.47

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Solution

The fourth proportional to 124,781.45, 172,198.42 and 71,071.47 is: 98,078.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,781.45 : 172,198.42 = 71,071.47 : x
  2. Step 2: Convert to fraction form
    124,781.45/172,198.42 = 71,071.47/x
  3. Step 3: Cross multiply
    124,781.45x = 172,198.42 × 71,071.47
  4. Step 4: Simplify right side
    124,781.45x = 12,238,393,980.09
  5. Step 5: Solve for x
    x = 12,238,393,980.09/124,781.45
  6. Step 6: Final answer
    x = 98,078.63

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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.