Home / 137,746.20-206,400.60-90,944.40

Finding the Fourth Proportional to 137,746.20, 206,400.60 and 90,944.40

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Solution

The fourth proportional to 137,746.20, 206,400.60 and 90,944.40 is: 136,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,746.20 : 206,400.60 = 90,944.40 : x
  2. Step 2: Convert to fraction form
    137,746.20/206,400.60 = 90,944.40/x
  3. Step 3: Cross multiply
    137,746.20x = 206,400.60 × 90,944.40
  4. Step 4: Simplify right side
    137,746.20x = 18,770,978,726.64
  5. Step 5: Solve for x
    x = 18,770,978,726.64/137,746.20
  6. Step 6: Final answer
    x = 136,272.21

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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.