Home / 105,916.25-146,163.86-57,517.76

Finding the Fourth Proportional to 105,916.25, 146,163.86 and 57,517.76

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Solution

The fourth proportional to 105,916.25, 146,163.86 and 57,517.76 is: 79,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,916.25 : 146,163.86 = 57,517.76 : x
  2. Step 2: Convert to fraction form
    105,916.25/146,163.86 = 57,517.76/x
  3. Step 3: Cross multiply
    105,916.25x = 146,163.86 × 57,517.76
  4. Step 4: Simplify right side
    105,916.25x = 8,407,017,820.15
  5. Step 5: Solve for x
    x = 8,407,017,820.15/105,916.25
  6. Step 6: Final answer
    x = 79,374.20

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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.