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Finding the Fourth Proportional to 180,625.60, 270,938.40 and 87,140.80

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Solution

The fourth proportional to 180,625.60, 270,938.40 and 87,140.80 is: 130,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,625.60 : 270,938.40 = 87,140.80 : x
  2. Step 2: Convert to fraction form
    180,625.60/270,938.40 = 87,140.80/x
  3. Step 3: Cross multiply
    180,625.60x = 270,938.40 × 87,140.80
  4. Step 4: Simplify right side
    180,625.60x = 23,609,788,926.72
  5. Step 5: Solve for x
    x = 23,609,788,926.72/180,625.60
  6. Step 6: Final answer
    x = 130,711.20

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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.