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Finding the Fourth Proportional to 162,811.20, 224,672.80 and 91,190.08

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Solution

The fourth proportional to 162,811.20, 224,672.80 and 91,190.08 is: 125,838.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,811.20 : 224,672.80 = 91,190.08 : x
  2. Step 2: Convert to fraction form
    162,811.20/224,672.80 = 91,190.08/x
  3. Step 3: Cross multiply
    162,811.20x = 224,672.80 × 91,190.08
  4. Step 4: Simplify right side
    162,811.20x = 20,487,930,605.82
  5. Step 5: Solve for x
    x = 20,487,930,605.82/162,811.20
  6. Step 6: Final answer
    x = 125,838.58

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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.