Home / 445,151.45-667,727.18-129,618.65

Finding the Fourth Proportional to 445,151.45, 667,727.18 and 129,618.65

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Solution

The fourth proportional to 445,151.45, 667,727.18 and 129,618.65 is: 194,427.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,151.45 : 667,727.18 = 129,618.65 : x
  2. Step 2: Convert to fraction form
    445,151.45/667,727.18 = 129,618.65/x
  3. Step 3: Cross multiply
    445,151.45x = 667,727.18 × 129,618.65
  4. Step 4: Simplify right side
    445,151.45x = 86,549,894,991.81
  5. Step 5: Solve for x
    x = 86,549,894,991.81/445,151.45
  6. Step 6: Final answer
    x = 194,427.98

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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.