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Finding the Fourth Proportional to 180,339.78, 270,456.78 and 67,938.90

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Solution

The fourth proportional to 180,339.78, 270,456.78 and 67,938.90 is: 101,888.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,339.78 : 270,456.78 = 67,938.90 : x
  2. Step 2: Convert to fraction form
    180,339.78/270,456.78 = 67,938.90/x
  3. Step 3: Cross multiply
    180,339.78x = 270,456.78 × 67,938.90
  4. Step 4: Simplify right side
    180,339.78x = 18,374,536,130.74
  5. Step 5: Solve for x
    x = 18,374,536,130.74/180,339.78
  6. Step 6: Final answer
    x = 101,888.42

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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.