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Finding the Fourth Proportional to 148,710.62, 205,222.13 and 80,728.13

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Solution

The fourth proportional to 148,710.62, 205,222.13 and 80,728.13 is: 111,405.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,710.62 : 205,222.13 = 80,728.13 : x
  2. Step 2: Convert to fraction form
    148,710.62/205,222.13 = 80,728.13/x
  3. Step 3: Cross multiply
    148,710.62x = 205,222.13 × 80,728.13
  4. Step 4: Simplify right side
    148,710.62x = 16,567,197,359.77
  5. Step 5: Solve for x
    x = 16,567,197,359.77/148,710.62
  6. Step 6: Final answer
    x = 111,405.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.