Home / 100,302.80-138,432.60-57,853.04

Finding the Fourth Proportional to 100,302.80, 138,432.60 and 57,853.04

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Solution

The fourth proportional to 100,302.80, 138,432.60 and 57,853.04 is: 79,845.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,302.80 : 138,432.60 = 57,853.04 : x
  2. Step 2: Convert to fraction form
    100,302.80/138,432.60 = 57,853.04/x
  3. Step 3: Cross multiply
    100,302.80x = 138,432.60 × 57,853.04
  4. Step 4: Simplify right side
    100,302.80x = 8,008,746,745.10
  5. Step 5: Solve for x
    x = 8,008,746,745.10/100,302.80
  6. Step 6: Final answer
    x = 79,845.69

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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.