Home / 126,640.13-174,766.28-72,916.47

Finding the Fourth Proportional to 126,640.13, 174,766.28 and 72,916.47

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Solution

The fourth proportional to 126,640.13, 174,766.28 and 72,916.47 is: 100,626.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,640.13 : 174,766.28 = 72,916.47 : x
  2. Step 2: Convert to fraction form
    126,640.13/174,766.28 = 72,916.47/x
  3. Step 3: Cross multiply
    126,640.13x = 174,766.28 × 72,916.47
  4. Step 4: Simplify right side
    126,640.13x = 12,743,339,848.05
  5. Step 5: Solve for x
    x = 12,743,339,848.05/126,640.13
  6. Step 6: Final answer
    x = 100,626.40

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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.