Home / 98,119.38-135,386.24-57,845.78

Finding the Fourth Proportional to 98,119.38, 135,386.24 and 57,845.78

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Solution

The fourth proportional to 98,119.38, 135,386.24 and 57,845.78 is: 79,816.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,119.38 : 135,386.24 = 57,845.78 : x
  2. Step 2: Convert to fraction form
    98,119.38/135,386.24 = 57,845.78/x
  3. Step 3: Cross multiply
    98,119.38x = 135,386.24 × 57,845.78
  4. Step 4: Simplify right side
    98,119.38x = 7,831,521,687.91
  5. Step 5: Solve for x
    x = 7,831,521,687.91/98,119.38
  6. Step 6: Final answer
    x = 79,816.26

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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.