Home / 138,116.07-207,178.11-53,872.83

Finding the Fourth Proportional to 138,116.07, 207,178.11 and 53,872.83

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Solution

The fourth proportional to 138,116.07, 207,178.11 and 53,872.83 is: 80,810.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,116.07 : 207,178.11 = 53,872.83 : x
  2. Step 2: Convert to fraction form
    138,116.07/207,178.11 = 53,872.83/x
  3. Step 3: Cross multiply
    138,116.07x = 207,178.11 × 53,872.83
  4. Step 4: Simplify right side
    138,116.07x = 11,161,271,099.75
  5. Step 5: Solve for x
    x = 11,161,271,099.75/138,116.07
  6. Step 6: Final answer
    x = 80,810.81

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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.