Home / 245,621.57-338,939.51-138,170.88

Finding the Fourth Proportional to 245,621.57, 338,939.51 and 138,170.88

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Solution

The fourth proportional to 245,621.57, 338,939.51 and 138,170.88 is: 190,665.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,621.57 : 338,939.51 = 138,170.88 : x
  2. Step 2: Convert to fraction form
    245,621.57/338,939.51 = 138,170.88/x
  3. Step 3: Cross multiply
    245,621.57x = 338,939.51 × 138,170.88
  4. Step 4: Simplify right side
    245,621.57x = 46,831,569,672.61
  5. Step 5: Solve for x
    x = 46,831,569,672.61/245,621.57
  6. Step 6: Final answer
    x = 190,665.55

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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.