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Finding the Fourth Proportional to 185,719.50, 278,689.93 and 67,400.08

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Solution

The fourth proportional to 185,719.50, 278,689.93 and 67,400.08 is: 101,140.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,719.50 : 278,689.93 = 67,400.08 : x
  2. Step 2: Convert to fraction form
    185,719.50/278,689.93 = 67,400.08/x
  3. Step 3: Cross multiply
    185,719.50x = 278,689.93 × 67,400.08
  4. Step 4: Simplify right side
    185,719.50x = 18,783,722,711.97
  5. Step 5: Solve for x
    x = 18,783,722,711.97/185,719.50
  6. Step 6: Final answer
    x = 101,140.28

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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.