Home / 261,214.16-391,877.62-81,296.05

Finding the Fourth Proportional to 261,214.16, 391,877.62 and 81,296.05

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Solution

The fourth proportional to 261,214.16, 391,877.62 and 81,296.05 is: 121,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,214.16 : 391,877.62 = 81,296.05 : x
  2. Step 2: Convert to fraction form
    261,214.16/391,877.62 = 81,296.05/x
  3. Step 3: Cross multiply
    261,214.16x = 391,877.62 × 81,296.05
  4. Step 4: Simplify right side
    261,214.16x = 31,858,100,630.01
  5. Step 5: Solve for x
    x = 31,858,100,630.01/261,214.16
  6. Step 6: Final answer
    x = 121,961.61

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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.