Home / 261,119.69-391,702.31-74,131.19

Finding the Fourth Proportional to 261,119.69, 391,702.31 and 74,131.19

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Solution

The fourth proportional to 261,119.69, 391,702.31 and 74,131.19 is: 111,203.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,119.69 : 391,702.31 = 74,131.19 : x
  2. Step 2: Convert to fraction form
    261,119.69/391,702.31 = 74,131.19/x
  3. Step 3: Cross multiply
    261,119.69x = 391,702.31 × 74,131.19
  4. Step 4: Simplify right side
    261,119.69x = 29,037,358,366.05
  5. Step 5: Solve for x
    x = 29,037,358,366.05/261,119.69
  6. Step 6: Final answer
    x = 111,203.25

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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.