Home / 134,290.20-185,305.95-77,691

Finding the Fourth Proportional to 134,290.20, 185,305.95 and 77,691

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Solution

The fourth proportional to 134,290.20, 185,305.95 and 77,691 is: 107,205.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,290.20 : 185,305.95 = 77,691 : x
  2. Step 2: Convert to fraction form
    134,290.20/185,305.95 = 77,691/x
  3. Step 3: Cross multiply
    134,290.20x = 185,305.95 × 77,691
  4. Step 4: Simplify right side
    134,290.20x = 14,396,604,561.45
  5. Step 5: Solve for x
    x = 14,396,604,561.45/134,290.20
  6. Step 6: Final answer
    x = 107,205.18

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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.