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Finding the Fourth Proportional to 99,048.80, 148,573.20 and 65,660.60

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Solution

The fourth proportional to 99,048.80, 148,573.20 and 65,660.60 is: 98,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,048.80 : 148,573.20 = 65,660.60 : x
  2. Step 2: Convert to fraction form
    99,048.80/148,573.20 = 65,660.60/x
  3. Step 3: Cross multiply
    99,048.80x = 148,573.20 × 65,660.60
  4. Step 4: Simplify right side
    99,048.80x = 9,755,405,455.92
  5. Step 5: Solve for x
    x = 9,755,405,455.92/99,048.80
  6. Step 6: Final answer
    x = 98,490.90

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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.