Home / 132,386.44-182,719.86-78,661.12

Finding the Fourth Proportional to 132,386.44, 182,719.86 and 78,661.12

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Solution

The fourth proportional to 132,386.44, 182,719.86 and 78,661.12 is: 108,568.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,386.44 : 182,719.86 = 78,661.12 : x
  2. Step 2: Convert to fraction form
    132,386.44/182,719.86 = 78,661.12/x
  3. Step 3: Cross multiply
    132,386.44x = 182,719.86 × 78,661.12
  4. Step 4: Simplify right side
    132,386.44x = 14,372,948,833.84
  5. Step 5: Solve for x
    x = 14,372,948,833.84/132,386.44
  6. Step 6: Final answer
    x = 108,568.13

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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.