Home / 261,151.12-391,679.52-118,963.36

Finding the Fourth Proportional to 261,151.12, 391,679.52 and 118,963.36

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Solution

The fourth proportional to 261,151.12, 391,679.52 and 118,963.36 is: 178,423.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,151.12 : 391,679.52 = 118,963.36 : x
  2. Step 2: Convert to fraction form
    261,151.12/391,679.52 = 118,963.36/x
  3. Step 3: Cross multiply
    261,151.12x = 391,679.52 × 118,963.36
  4. Step 4: Simplify right side
    261,151.12x = 46,595,511,742.39
  5. Step 5: Solve for x
    x = 46,595,511,742.39/261,151.12
  6. Step 6: Final answer
    x = 178,423.56

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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.