Home / 122,311.20-168,711.77-88,369.56

Finding the Fourth Proportional to 122,311.20, 168,711.77 and 88,369.56

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Solution

The fourth proportional to 122,311.20, 168,711.77 and 88,369.56 is: 121,893.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,311.20 : 168,711.77 = 88,369.56 : x
  2. Step 2: Convert to fraction form
    122,311.20/168,711.77 = 88,369.56/x
  3. Step 3: Cross multiply
    122,311.20x = 168,711.77 × 88,369.56
  4. Step 4: Simplify right side
    122,311.20x = 14,908,984,439.87
  5. Step 5: Solve for x
    x = 14,908,984,439.87/122,311.20
  6. Step 6: Final answer
    x = 121,893.86

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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.