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Finding the Fourth Proportional to 126,640.80, 174,913.02 and 101,235.15

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Solution

The fourth proportional to 126,640.80, 174,913.02 and 101,235.15 is: 139,823.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,640.80 : 174,913.02 = 101,235.15 : x
  2. Step 2: Convert to fraction form
    126,640.80/174,913.02 = 101,235.15/x
  3. Step 3: Cross multiply
    126,640.80x = 174,913.02 × 101,235.15
  4. Step 4: Simplify right side
    126,640.80x = 17,707,345,816.65
  5. Step 5: Solve for x
    x = 17,707,345,816.65/126,640.80
  6. Step 6: Final answer
    x = 139,823.39

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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.