Home / 128,260.66-176,999.43-71,672.04

Finding the Fourth Proportional to 128,260.66, 176,999.43 and 71,672.04

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Solution

The fourth proportional to 128,260.66, 176,999.43 and 71,672.04 is: 98,907.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,260.66 : 176,999.43 = 71,672.04 : x
  2. Step 2: Convert to fraction form
    128,260.66/176,999.43 = 71,672.04/x
  3. Step 3: Cross multiply
    128,260.66x = 176,999.43 × 71,672.04
  4. Step 4: Simplify right side
    128,260.66x = 12,685,910,226.94
  5. Step 5: Solve for x
    x = 12,685,910,226.94/128,260.66
  6. Step 6: Final answer
    x = 98,907.26

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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.