Home / 115,278.59-172,934.06-40,381.58

Finding the Fourth Proportional to 115,278.59, 172,934.06 and 40,381.58

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Solution

The fourth proportional to 115,278.59, 172,934.06 and 40,381.58 is: 60,578.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,278.59 : 172,934.06 = 40,381.58 : x
  2. Step 2: Convert to fraction form
    115,278.59/172,934.06 = 40,381.58/x
  3. Step 3: Cross multiply
    115,278.59x = 172,934.06 × 40,381.58
  4. Step 4: Simplify right side
    115,278.59x = 6,983,351,111.90
  5. Step 5: Solve for x
    x = 6,983,351,111.90/115,278.59
  6. Step 6: Final answer
    x = 60,578.04

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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.