Home / 445,148.20-667,722.30-129,615.40

Finding the Fourth Proportional to 445,148.20, 667,722.30 and 129,615.40

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Solution

The fourth proportional to 445,148.20, 667,722.30 and 129,615.40 is: 194,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,148.20 : 667,722.30 = 129,615.40 : x
  2. Step 2: Convert to fraction form
    445,148.20/667,722.30 = 129,615.40/x
  3. Step 3: Cross multiply
    445,148.20x = 667,722.30 × 129,615.40
  4. Step 4: Simplify right side
    445,148.20x = 86,547,093,003.42
  5. Step 5: Solve for x
    x = 86,547,093,003.42/445,148.20
  6. Step 6: Final answer
    x = 194,423.10

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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.