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Finding the Fourth Proportional to 97,660.40, 146,490.60 and 88,620.80

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Solution

The fourth proportional to 97,660.40, 146,490.60 and 88,620.80 is: 132,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,660.40 : 146,490.60 = 88,620.80 : x
  2. Step 2: Convert to fraction form
    97,660.40/146,490.60 = 88,620.80/x
  3. Step 3: Cross multiply
    97,660.40x = 146,490.60 × 88,620.80
  4. Step 4: Simplify right side
    97,660.40x = 12,982,114,164.48
  5. Step 5: Solve for x
    x = 12,982,114,164.48/97,660.40
  6. Step 6: Final answer
    x = 132,931.20

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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.