Home / 261,780.12-392,670.14-74,791.62

Finding the Fourth Proportional to 261,780.12, 392,670.14 and 74,791.62

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Solution

The fourth proportional to 261,780.12, 392,670.14 and 74,791.62 is: 112,187.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,780.12 : 392,670.14 = 74,791.62 : x
  2. Step 2: Convert to fraction form
    261,780.12/392,670.14 = 74,791.62/x
  3. Step 3: Cross multiply
    261,780.12x = 392,670.14 × 74,791.62
  4. Step 4: Simplify right side
    261,780.12x = 29,368,435,522.27
  5. Step 5: Solve for x
    x = 29,368,435,522.27/261,780.12
  6. Step 6: Final answer
    x = 112,187.42

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1.5x scale

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.