Home / 261,112.77-391,669.38-71,575.20

Finding the Fourth Proportional to 261,112.77, 391,669.38 and 71,575.20

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Solution

The fourth proportional to 261,112.77, 391,669.38 and 71,575.20 is: 107,362.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,112.77 : 391,669.38 = 71,575.20 : x
  2. Step 2: Convert to fraction form
    261,112.77/391,669.38 = 71,575.20/x
  3. Step 3: Cross multiply
    261,112.77x = 391,669.38 × 71,575.20
  4. Step 4: Simplify right side
    261,112.77x = 28,033,814,207.38
  5. Step 5: Solve for x
    x = 28,033,814,207.38/261,112.77
  6. Step 6: Final answer
    x = 107,362.86

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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.