Home / 131,306.52-197,020.26-81,445.08

Finding the Fourth Proportional to 131,306.52, 197,020.26 and 81,445.08

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Solution

The fourth proportional to 131,306.52, 197,020.26 and 81,445.08 is: 122,205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,306.52 : 197,020.26 = 81,445.08 : x
  2. Step 2: Convert to fraction form
    131,306.52/197,020.26 = 81,445.08/x
  3. Step 3: Cross multiply
    131,306.52x = 197,020.26 × 81,445.08
  4. Step 4: Simplify right side
    131,306.52x = 16,046,330,837.32
  5. Step 5: Solve for x
    x = 16,046,330,837.32/131,306.52
  6. Step 6: Final answer
    x = 122,205.13

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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.