Home / 245,517.16-338,823.78-138,092.20

Finding the Fourth Proportional to 245,517.16, 338,823.78 and 138,092.20

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Solution

The fourth proportional to 245,517.16, 338,823.78 and 138,092.20 is: 190,572.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,517.16 : 338,823.78 = 138,092.20 : x
  2. Step 2: Convert to fraction form
    245,517.16/338,823.78 = 138,092.20/x
  3. Step 3: Cross multiply
    245,517.16x = 338,823.78 × 138,092.20
  4. Step 4: Simplify right side
    245,517.16x = 46,788,921,192.52
  5. Step 5: Solve for x
    x = 46,788,921,192.52/245,517.16
  6. Step 6: Final answer
    x = 190,572.92

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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.