Home / 90,922.10-136,383.15-28,611.70

Finding the Fourth Proportional to 90,922.10, 136,383.15 and 28,611.70

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Solution

The fourth proportional to 90,922.10, 136,383.15 and 28,611.70 is: 42,917.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,922.10 : 136,383.15 = 28,611.70 : x
  2. Step 2: Convert to fraction form
    90,922.10/136,383.15 = 28,611.70/x
  3. Step 3: Cross multiply
    90,922.10x = 136,383.15 × 28,611.70
  4. Step 4: Simplify right side
    90,922.10x = 3,902,153,772.86
  5. Step 5: Solve for x
    x = 3,902,153,772.86/90,922.10
  6. Step 6: Final answer
    x = 42,917.55

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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.