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Finding the Fourth Proportional to 167,153.92, 250,719.12 and 78,426.88

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Solution

The fourth proportional to 167,153.92, 250,719.12 and 78,426.88 is: 117,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,153.92 : 250,719.12 = 78,426.88 : x
  2. Step 2: Convert to fraction form
    167,153.92/250,719.12 = 78,426.88/x
  3. Step 3: Cross multiply
    167,153.92x = 250,719.12 × 78,426.88
  4. Step 4: Simplify right side
    167,153.92x = 19,663,118,337.95
  5. Step 5: Solve for x
    x = 19,663,118,337.95/167,153.92
  6. Step 6: Final answer
    x = 117,634.80

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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.