Home / 207,359.06-311,113.56-72,443.12

Finding the Fourth Proportional to 207,359.06, 311,113.56 and 72,443.12

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Solution

The fourth proportional to 207,359.06, 311,113.56 and 72,443.12 is: 108,690.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,359.06 : 311,113.56 = 72,443.12 : x
  2. Step 2: Convert to fraction form
    207,359.06/311,113.56 = 72,443.12/x
  3. Step 3: Cross multiply
    207,359.06x = 311,113.56 × 72,443.12
  4. Step 4: Simplify right side
    207,359.06x = 22,538,036,960.71
  5. Step 5: Solve for x
    x = 22,538,036,960.71/207,359.06
  6. Step 6: Final answer
    x = 108,690.87

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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.