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Finding the Fourth Proportional to 154,422.80, 231,461.40 and 87,894.80

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Solution

The fourth proportional to 154,422.80, 231,461.40 and 87,894.80 is: 131,743.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,422.80 : 231,461.40 = 87,894.80 : x
  2. Step 2: Convert to fraction form
    154,422.80/231,461.40 = 87,894.80/x
  3. Step 3: Cross multiply
    154,422.80x = 231,461.40 × 87,894.80
  4. Step 4: Simplify right side
    154,422.80x = 20,344,253,460.72
  5. Step 5: Solve for x
    x = 20,344,253,460.72/154,422.80
  6. Step 6: Final answer
    x = 131,743.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.