Home / 148,671.28-205,167.89-80,688.84

Finding the Fourth Proportional to 148,671.28, 205,167.89 and 80,688.84

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Solution

The fourth proportional to 148,671.28, 205,167.89 and 80,688.84 is: 111,351.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,671.28 : 205,167.89 = 80,688.84 : x
  2. Step 2: Convert to fraction form
    148,671.28/205,167.89 = 80,688.84/x
  3. Step 3: Cross multiply
    148,671.28x = 205,167.89 × 80,688.84
  4. Step 4: Simplify right side
    148,671.28x = 16,554,759,049.35
  5. Step 5: Solve for x
    x = 16,554,759,049.35/148,671.28
  6. Step 6: Final answer
    x = 111,351.43

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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.