Home / 137,731.10-206,596.65-121,109.90

Finding the Fourth Proportional to 137,731.10, 206,596.65 and 121,109.90

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Solution

The fourth proportional to 137,731.10, 206,596.65 and 121,109.90 is: 181,664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,731.10 : 206,596.65 = 121,109.90 : x
  2. Step 2: Convert to fraction form
    137,731.10/206,596.65 = 121,109.90/x
  3. Step 3: Cross multiply
    137,731.10x = 206,596.65 × 121,109.90
  4. Step 4: Simplify right side
    137,731.10x = 25,020,899,621.84
  5. Step 5: Solve for x
    x = 25,020,899,621.84/137,731.10
  6. Step 6: Final answer
    x = 181,664.85

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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.