Home / 261,147.60-391,756.26-103,339.15

Finding the Fourth Proportional to 261,147.60, 391,756.26 and 103,339.15

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Solution

The fourth proportional to 261,147.60, 391,756.26 and 103,339.15 is: 155,022.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,147.60 : 391,756.26 = 103,339.15 : x
  2. Step 2: Convert to fraction form
    261,147.60/391,756.26 = 103,339.15/x
  3. Step 3: Cross multiply
    261,147.60x = 391,756.26 × 103,339.15
  4. Step 4: Simplify right side
    261,147.60x = 40,483,757,945.22
  5. Step 5: Solve for x
    x = 40,483,757,945.22/261,147.60
  6. Step 6: Final answer
    x = 155,022.52

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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.