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Finding the Fourth Proportional to 162,813.56, 224,691.18 and 91,189.40

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Solution

The fourth proportional to 162,813.56, 224,691.18 and 91,189.40 is: 125,846.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,813.56 : 224,691.18 = 91,189.40 : x
  2. Step 2: Convert to fraction form
    162,813.56/224,691.18 = 91,189.40/x
  3. Step 3: Cross multiply
    162,813.56x = 224,691.18 × 91,189.40
  4. Step 4: Simplify right side
    162,813.56x = 20,489,453,889.49
  5. Step 5: Solve for x
    x = 20,489,453,889.49/162,813.56
  6. Step 6: Final answer
    x = 125,846.11

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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.