Home / 102,676.43-141,640.40-64,972.55

Finding the Fourth Proportional to 102,676.43, 141,640.40 and 64,972.55

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Solution

The fourth proportional to 102,676.43, 141,640.40 and 64,972.55 is: 89,628.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,676.43 : 141,640.40 = 64,972.55 : x
  2. Step 2: Convert to fraction form
    102,676.43/141,640.40 = 64,972.55/x
  3. Step 3: Cross multiply
    102,676.43x = 141,640.40 × 64,972.55
  4. Step 4: Simplify right side
    102,676.43x = 9,202,737,454.49
  5. Step 5: Solve for x
    x = 9,202,737,454.49/102,676.43
  6. Step 6: Final answer
    x = 89,628.53

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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.