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Finding the Fourth Proportional to 146,938.80, 220,408.20 and 87,841.20

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Solution

The fourth proportional to 146,938.80, 220,408.20 and 87,841.20 is: 131,761.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,938.80 : 220,408.20 = 87,841.20 : x
  2. Step 2: Convert to fraction form
    146,938.80/220,408.20 = 87,841.20/x
  3. Step 3: Cross multiply
    146,938.80x = 220,408.20 × 87,841.20
  4. Step 4: Simplify right side
    146,938.80x = 19,360,920,777.84
  5. Step 5: Solve for x
    x = 19,360,920,777.84/146,938.80
  6. Step 6: Final answer
    x = 131,761.80

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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.