Home / 102,708.66-141,732.78-57,377.64

Finding the Fourth Proportional to 102,708.66, 141,732.78 and 57,377.64

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Solution

The fourth proportional to 102,708.66, 141,732.78 and 57,377.64 is: 79,178.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,708.66 : 141,732.78 = 57,377.64 : x
  2. Step 2: Convert to fraction form
    102,708.66/141,732.78 = 57,377.64/x
  3. Step 3: Cross multiply
    102,708.66x = 141,732.78 × 57,377.64
  4. Step 4: Simplify right side
    102,708.66x = 8,132,292,427.04
  5. Step 5: Solve for x
    x = 8,132,292,427.04/102,708.66
  6. Step 6: Final answer
    x = 79,178.25

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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.