Home / 445,148.70-667,723.05-129,615.90

Finding the Fourth Proportional to 445,148.70, 667,723.05 and 129,615.90

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Solution

The fourth proportional to 445,148.70, 667,723.05 and 129,615.90 is: 194,423.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,148.70 : 667,723.05 = 129,615.90 : x
  2. Step 2: Convert to fraction form
    445,148.70/667,723.05 = 129,615.90/x
  3. Step 3: Cross multiply
    445,148.70x = 667,723.05 × 129,615.90
  4. Step 4: Simplify right side
    445,148.70x = 86,547,524,076.50
  5. Step 5: Solve for x
    x = 86,547,524,076.50/445,148.70
  6. Step 6: Final answer
    x = 194,423.85

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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.