Home / 199,874.86-275,697.12-128,141.26

Finding the Fourth Proportional to 199,874.86, 275,697.12 and 128,141.26

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Solution

The fourth proportional to 199,874.86, 275,697.12 and 128,141.26 is: 176,751.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,874.86 : 275,697.12 = 128,141.26 : x
  2. Step 2: Convert to fraction form
    199,874.86/275,697.12 = 128,141.26/x
  3. Step 3: Cross multiply
    199,874.86x = 275,697.12 × 128,141.26
  4. Step 4: Simplify right side
    199,874.86x = 35,328,176,335.17
  5. Step 5: Solve for x
    x = 35,328,176,335.17/199,874.86
  6. Step 6: Final answer
    x = 176,751.48

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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.