Home / 138,155.80-207,343.06-53,956.30

Finding the Fourth Proportional to 138,155.80, 207,343.06 and 53,956.30

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Solution

The fourth proportional to 138,155.80, 207,343.06 and 53,956.30 is: 80,977.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,155.80 : 207,343.06 = 53,956.30 : x
  2. Step 2: Convert to fraction form
    138,155.80/207,343.06 = 53,956.30/x
  3. Step 3: Cross multiply
    138,155.80x = 207,343.06 × 53,956.30
  4. Step 4: Simplify right side
    138,155.80x = 11,187,464,348.28
  5. Step 5: Solve for x
    x = 11,187,464,348.28/138,155.80
  6. Step 6: Final answer
    x = 80,977.16

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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.