Home / 131,454.20-197,108.40-52,479.20

Finding the Fourth Proportional to 131,454.20, 197,108.40 and 52,479.20

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Solution

The fourth proportional to 131,454.20, 197,108.40 and 52,479.20 is: 78,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,454.20 : 197,108.40 = 52,479.20 : x
  2. Step 2: Convert to fraction form
    131,454.20/197,108.40 = 52,479.20/x
  3. Step 3: Cross multiply
    131,454.20x = 197,108.40 × 52,479.20
  4. Step 4: Simplify right side
    131,454.20x = 10,344,091,145.28
  5. Step 5: Solve for x
    x = 10,344,091,145.28/131,454.20
  6. Step 6: Final answer
    x = 78,689.70

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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.