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Finding the Fourth Proportional to 107,970.27, 149,009.49 and 80,698.92

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Solution

The fourth proportional to 107,970.27, 149,009.49 and 80,698.92 is: 111,372.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,970.27 : 149,009.49 = 80,698.92 : x
  2. Step 2: Convert to fraction form
    107,970.27/149,009.49 = 80,698.92/x
  3. Step 3: Cross multiply
    107,970.27x = 149,009.49 × 80,698.92
  4. Step 4: Simplify right side
    107,970.27x = 12,024,904,912.75
  5. Step 5: Solve for x
    x = 12,024,904,912.75/107,970.27
  6. Step 6: Final answer
    x = 111,372.37

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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.