Home / 137,864.76-190,204.92-90,146.04

Finding the Fourth Proportional to 137,864.76, 190,204.92 and 90,146.04

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Solution

The fourth proportional to 137,864.76, 190,204.92 and 90,146.04 is: 124,369.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,864.76 : 190,204.92 = 90,146.04 : x
  2. Step 2: Convert to fraction form
    137,864.76/190,204.92 = 90,146.04/x
  3. Step 3: Cross multiply
    137,864.76x = 190,204.92 × 90,146.04
  4. Step 4: Simplify right side
    137,864.76x = 17,146,220,326.52
  5. Step 5: Solve for x
    x = 17,146,220,326.52/137,864.76
  6. Step 6: Final answer
    x = 124,369.86

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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.