Home / 136,948.10-205,422.15-99,331.70

Finding the Fourth Proportional to 136,948.10, 205,422.15 and 99,331.70

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Solution

The fourth proportional to 136,948.10, 205,422.15 and 99,331.70 is: 148,997.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,948.10 : 205,422.15 = 99,331.70 : x
  2. Step 2: Convert to fraction form
    136,948.10/205,422.15 = 99,331.70/x
  3. Step 3: Cross multiply
    136,948.10x = 205,422.15 × 99,331.70
  4. Step 4: Simplify right side
    136,948.10x = 20,404,931,377.16
  5. Step 5: Solve for x
    x = 20,404,931,377.16/136,948.10
  6. Step 6: Final answer
    x = 148,997.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.