Home / 105,256.97-157,997.82-45,315.11

Finding the Fourth Proportional to 105,256.97, 157,997.82 and 45,315.11

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Solution

The fourth proportional to 105,256.97, 157,997.82 and 45,315.11 is: 68,021.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,256.97 : 157,997.82 = 45,315.11 : x
  2. Step 2: Convert to fraction form
    105,256.97/157,997.82 = 45,315.11/x
  3. Step 3: Cross multiply
    105,256.97x = 157,997.82 × 45,315.11
  4. Step 4: Simplify right side
    105,256.97x = 7,159,687,803.07
  5. Step 5: Solve for x
    x = 7,159,687,803.07/105,256.97
  6. Step 6: Final answer
    x = 68,021.04

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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.