Home / 138,522.12-207,876.60-54,271.72

Finding the Fourth Proportional to 138,522.12, 207,876.60 and 54,271.72

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Solution

The fourth proportional to 138,522.12, 207,876.60 and 54,271.72 is: 81,444.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,522.12 : 207,876.60 = 54,271.72 : x
  2. Step 2: Convert to fraction form
    138,522.12/207,876.60 = 54,271.72/x
  3. Step 3: Cross multiply
    138,522.12x = 207,876.60 × 54,271.72
  4. Step 4: Simplify right side
    138,522.12x = 11,281,821,042.24
  5. Step 5: Solve for x
    x = 11,281,821,042.24/138,522.12
  6. Step 6: Final answer
    x = 81,444.18

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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.