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Finding the Fourth Proportional to 162,321.84, 223,989.57 and 90,691.92

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Solution

The fourth proportional to 162,321.84, 223,989.57 and 90,691.92 is: 125,146.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,321.84 : 223,989.57 = 90,691.92 : x
  2. Step 2: Convert to fraction form
    162,321.84/223,989.57 = 90,691.92/x
  3. Step 3: Cross multiply
    162,321.84x = 223,989.57 × 90,691.92
  4. Step 4: Simplify right side
    162,321.84x = 20,314,044,163.27
  5. Step 5: Solve for x
    x = 20,314,044,163.27/162,321.84
  6. Step 6: Final answer
    x = 125,146.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.