Home / 102,876.90-141,983.20-57,557.40

Finding the Fourth Proportional to 102,876.90, 141,983.20 and 57,557.40

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Solution

The fourth proportional to 102,876.90, 141,983.20 and 57,557.40 is: 79,436.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,876.90 : 141,983.20 = 57,557.40 : x
  2. Step 2: Convert to fraction form
    102,876.90/141,983.20 = 57,557.40/x
  3. Step 3: Cross multiply
    102,876.90x = 141,983.20 × 57,557.40
  4. Step 4: Simplify right side
    102,876.90x = 8,172,183,835.68
  5. Step 5: Solve for x
    x = 8,172,183,835.68/102,876.90
  6. Step 6: Final answer
    x = 79,436.53

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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.