Home / 138,329.13-190,898.60-80,974.11

Finding the Fourth Proportional to 138,329.13, 190,898.60 and 80,974.11

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Solution

The fourth proportional to 138,329.13, 190,898.60 and 80,974.11 is: 111,746.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,329.13 : 190,898.60 = 80,974.11 : x
  2. Step 2: Convert to fraction form
    138,329.13/190,898.60 = 80,974.11/x
  3. Step 3: Cross multiply
    138,329.13x = 190,898.60 × 80,974.11
  4. Step 4: Simplify right side
    138,329.13x = 15,457,844,235.25
  5. Step 5: Solve for x
    x = 15,457,844,235.25/138,329.13
  6. Step 6: Final answer
    x = 111,746.85

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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.