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Finding the Fourth Proportional to 162,913.25, 224,808 and 91,279.43

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Solution

The fourth proportional to 162,913.25, 224,808 and 91,279.43 is: 125,958.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,913.25 : 224,808 = 91,279.43 : x
  2. Step 2: Convert to fraction form
    162,913.25/224,808 = 91,279.43/x
  3. Step 3: Cross multiply
    162,913.25x = 224,808 × 91,279.43
  4. Step 4: Simplify right side
    162,913.25x = 20,520,344,975.40
  5. Step 5: Solve for x
    x = 20,520,344,975.40/162,913.25
  6. Step 6: Final answer
    x = 125,958.73

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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.