Home / 150,591.02-207,780.76-90,138.70

Finding the Fourth Proportional to 150,591.02, 207,780.76 and 90,138.70

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Solution

The fourth proportional to 150,591.02, 207,780.76 and 90,138.70 is: 124,370.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,591.02 : 207,780.76 = 90,138.70 : x
  2. Step 2: Convert to fraction form
    150,591.02/207,780.76 = 90,138.70/x
  3. Step 3: Cross multiply
    150,591.02x = 207,780.76 × 90,138.70
  4. Step 4: Simplify right side
    150,591.02x = 18,729,087,591.41
  5. Step 5: Solve for x
    x = 18,729,087,591.41/150,591.02
  6. Step 6: Final answer
    x = 124,370.55

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1.5x scale

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.