Home / 150,639.28-207,888.72-90,219.76

Finding the Fourth Proportional to 150,639.28, 207,888.72 and 90,219.76

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Solution

The fourth proportional to 150,639.28, 207,888.72 and 90,219.76 is: 124,507.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,639.28 : 207,888.72 = 90,219.76 : x
  2. Step 2: Convert to fraction form
    150,639.28/207,888.72 = 90,219.76/x
  3. Step 3: Cross multiply
    150,639.28x = 207,888.72 × 90,219.76
  4. Step 4: Simplify right side
    150,639.28x = 18,755,670,425.11
  5. Step 5: Solve for x
    x = 18,755,670,425.11/150,639.28
  6. Step 6: Final answer
    x = 124,507.17

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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.