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Finding the Fourth Proportional to 185,939.40, 279,200.70 and 107,207.40

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Solution

The fourth proportional to 185,939.40, 279,200.70 and 107,207.40 is: 160,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,939.40 : 279,200.70 = 107,207.40 : x
  2. Step 2: Convert to fraction form
    185,939.40/279,200.70 = 107,207.40/x
  3. Step 3: Cross multiply
    185,939.40x = 279,200.70 × 107,207.40
  4. Step 4: Simplify right side
    185,939.40x = 29,932,381,125.18
  5. Step 5: Solve for x
    x = 29,932,381,125.18/185,939.40
  6. Step 6: Final answer
    x = 160,979.23

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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.