Home / 83,045.20-124,438.20-71,899.60

Finding the Fourth Proportional to 83,045.20, 124,438.20 and 71,899.60

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Solution

The fourth proportional to 83,045.20, 124,438.20 and 71,899.60 is: 107,737.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,045.20 : 124,438.20 = 71,899.60 : x
  2. Step 2: Convert to fraction form
    83,045.20/124,438.20 = 71,899.60/x
  3. Step 3: Cross multiply
    83,045.20x = 124,438.20 × 71,899.60
  4. Step 4: Simplify right side
    83,045.20x = 8,947,056,804.72
  5. Step 5: Solve for x
    x = 8,947,056,804.72/83,045.20
  6. Step 6: Final answer
    x = 107,737.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.