Home / 137,011.91-205,001.08-80,882.55

Finding the Fourth Proportional to 137,011.91, 205,001.08 and 80,882.55

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Solution

The fourth proportional to 137,011.91, 205,001.08 and 80,882.55 is: 121,018.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,011.91 : 205,001.08 = 80,882.55 : x
  2. Step 2: Convert to fraction form
    137,011.91/205,001.08 = 80,882.55/x
  3. Step 3: Cross multiply
    137,011.91x = 205,001.08 × 80,882.55
  4. Step 4: Simplify right side
    137,011.91x = 16,581,009,900.95
  5. Step 5: Solve for x
    x = 16,581,009,900.95/137,011.91
  6. Step 6: Final answer
    x = 121,018.75

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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.