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Finding the Fourth Proportional to 135,061.60, 202,300.80 and 87,822.40

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Solution

The fourth proportional to 135,061.60, 202,300.80 and 87,822.40 is: 131,543.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,061.60 : 202,300.80 = 87,822.40 : x
  2. Step 2: Convert to fraction form
    135,061.60/202,300.80 = 87,822.40/x
  3. Step 3: Cross multiply
    135,061.60x = 202,300.80 × 87,822.40
  4. Step 4: Simplify right side
    135,061.60x = 17,766,541,777.92
  5. Step 5: Solve for x
    x = 17,766,541,777.92/135,061.60
  6. Step 6: Final answer
    x = 131,543.99

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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.