Home / 261,506.24-392,178.72-136,779.20

Finding the Fourth Proportional to 261,506.24, 392,178.72 and 136,779.20

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Solution

The fourth proportional to 261,506.24, 392,178.72 and 136,779.20 is: 205,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,506.24 : 392,178.72 = 136,779.20 : x
  2. Step 2: Convert to fraction form
    261,506.24/392,178.72 = 136,779.20/x
  3. Step 3: Cross multiply
    261,506.24x = 392,178.72 × 136,779.20
  4. Step 4: Simplify right side
    261,506.24x = 53,641,891,578.62
  5. Step 5: Solve for x
    x = 53,641,891,578.62/261,506.24
  6. Step 6: Final answer
    x = 205,126.62

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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.