Home / 207,389.20-311,141.40-89,117.20

Finding the Fourth Proportional to 207,389.20, 311,141.40 and 89,117.20

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Solution

The fourth proportional to 207,389.20, 311,141.40 and 89,117.20 is: 133,700.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,389.20 : 311,141.40 = 89,117.20 : x
  2. Step 2: Convert to fraction form
    207,389.20/311,141.40 = 89,117.20/x
  3. Step 3: Cross multiply
    207,389.20x = 311,141.40 × 89,117.20
  4. Step 4: Simplify right side
    207,389.20x = 27,728,050,372.08
  5. Step 5: Solve for x
    x = 27,728,050,372.08/207,389.20
  6. Step 6: Final answer
    x = 133,700.55

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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.