Home / 252,121.78-347,928.15-137,400.46

Finding the Fourth Proportional to 252,121.78, 347,928.15 and 137,400.46

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Solution

The fourth proportional to 252,121.78, 347,928.15 and 137,400.46 is: 189,612.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,121.78 : 347,928.15 = 137,400.46 : x
  2. Step 2: Convert to fraction form
    252,121.78/347,928.15 = 137,400.46/x
  3. Step 3: Cross multiply
    252,121.78x = 347,928.15 × 137,400.46
  4. Step 4: Simplify right side
    252,121.78x = 47,805,487,856.95
  5. Step 5: Solve for x
    x = 47,805,487,856.95/252,121.78
  6. Step 6: Final answer
    x = 189,612.69

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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.