Home / 199,910.03-275,740.61-128,376.90

Finding the Fourth Proportional to 199,910.03, 275,740.61 and 128,376.90

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Solution

The fourth proportional to 199,910.03, 275,740.61 and 128,376.90 is: 177,073.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,910.03 : 275,740.61 = 128,376.90 : x
  2. Step 2: Convert to fraction form
    199,910.03/275,740.61 = 128,376.90/x
  3. Step 3: Cross multiply
    199,910.03x = 275,740.61 × 128,376.90
  4. Step 4: Simplify right side
    199,910.03x = 35,398,724,074.02
  5. Step 5: Solve for x
    x = 35,398,724,074.02/199,910.03
  6. Step 6: Final answer
    x = 177,073.28

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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.