Home / 138,048.80-207,182.55-53,849.30

Finding the Fourth Proportional to 138,048.80, 207,182.55 and 53,849.30

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Solution

The fourth proportional to 138,048.80, 207,182.55 and 53,849.30 is: 80,816.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,048.80 : 207,182.55 = 53,849.30 : x
  2. Step 2: Convert to fraction form
    138,048.80/207,182.55 = 53,849.30/x
  3. Step 3: Cross multiply
    138,048.80x = 207,182.55 × 53,849.30
  4. Step 4: Simplify right side
    138,048.80x = 11,156,635,289.72
  5. Step 5: Solve for x
    x = 11,156,635,289.72/138,048.80
  6. Step 6: Final answer
    x = 80,816.60

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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.