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Finding the Fourth Proportional to 162,319.96, 224,002.65 and 90,703

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Solution

The fourth proportional to 162,319.96, 224,002.65 and 90,703 is: 125,170.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,319.96 : 224,002.65 = 90,703 : x
  2. Step 2: Convert to fraction form
    162,319.96/224,002.65 = 90,703/x
  3. Step 3: Cross multiply
    162,319.96x = 224,002.65 × 90,703
  4. Step 4: Simplify right side
    162,319.96x = 20,317,712,362.95
  5. Step 5: Solve for x
    x = 20,317,712,362.95/162,319.96
  6. Step 6: Final answer
    x = 125,170.76

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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.