Home / 120,077,587.11-165,707,211.87-65,073,443.61

Finding the Fourth Proportional to 120,077,587.11, 165,707,211.87 and 65,073,443.61

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Solution

The fourth proportional to 120,077,587.11, 165,707,211.87 and 65,073,443.61 is: 89,801,428.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,077,587.11 : 165,707,211.87 = 65,073,443.61 : x
  2. Step 2: Convert to fraction form
    120,077,587.11/165,707,211.87 = 65,073,443.61/x
  3. Step 3: Cross multiply
    120,077,587.11x = 165,707,211.87 × 65,073,443.61
  4. Step 4: Simplify right side
    120,077,587.11x = 10,783,138,907,392,768
  5. Step 5: Solve for x
    x = 10,783,138,907,392,768/120,077,587.11
  6. Step 6: Final answer
    x = 89,801,428.95

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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.