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Finding the Fourth Proportional to 154,520.98, 213,265.65 and 87,452.98

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Solution

The fourth proportional to 154,520.98, 213,265.65 and 87,452.98 is: 120,700.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,520.98 : 213,265.65 = 87,452.98 : x
  2. Step 2: Convert to fraction form
    154,520.98/213,265.65 = 87,452.98/x
  3. Step 3: Cross multiply
    154,520.98x = 213,265.65 × 87,452.98
  4. Step 4: Simplify right side
    154,520.98x = 18,650,716,624.14
  5. Step 5: Solve for x
    x = 18,650,716,624.14/154,520.98
  6. Step 6: Final answer
    x = 120,700.22

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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.