Home / 261,135.41-391,731.35-111,391.52

Finding the Fourth Proportional to 261,135.41, 391,731.35 and 111,391.52

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Solution

The fourth proportional to 261,135.41, 391,731.35 and 111,391.52 is: 167,099.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,135.41 : 391,731.35 = 111,391.52 : x
  2. Step 2: Convert to fraction form
    261,135.41/391,731.35 = 111,391.52/x
  3. Step 3: Cross multiply
    261,135.41x = 391,731.35 × 111,391.52
  4. Step 4: Simplify right side
    261,135.41x = 43,635,547,992.54
  5. Step 5: Solve for x
    x = 43,635,547,992.54/261,135.41
  6. Step 6: Final answer
    x = 167,099.32

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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.