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Finding the Fourth Proportional to 207,925.70, 311,888.55 and 123,726.20

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Solution

The fourth proportional to 207,925.70, 311,888.55 and 123,726.20 is: 185,589.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,925.70 : 311,888.55 = 123,726.20 : x
  2. Step 2: Convert to fraction form
    207,925.70/311,888.55 = 123,726.20/x
  3. Step 3: Cross multiply
    207,925.70x = 311,888.55 × 123,726.20
  4. Step 4: Simplify right side
    207,925.70x = 38,588,785,115.01
  5. Step 5: Solve for x
    x = 38,588,785,115.01/207,925.70
  6. Step 6: Final answer
    x = 185,589.30

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1.5x scale

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.