Home / 342,129.10-513,045.14-131,619.28

Finding the Fourth Proportional to 342,129.10, 513,045.14 and 131,619.28

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Solution

The fourth proportional to 342,129.10, 513,045.14 and 131,619.28 is: 197,371.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,129.10 : 513,045.14 = 131,619.28 : x
  2. Step 2: Convert to fraction form
    342,129.10/513,045.14 = 131,619.28/x
  3. Step 3: Cross multiply
    342,129.10x = 513,045.14 × 131,619.28
  4. Step 4: Simplify right side
    342,129.10x = 67,526,631,934.30
  5. Step 5: Solve for x
    x = 67,526,631,934.30/342,129.10
  6. Step 6: Final answer
    x = 197,371.79

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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.