Home / 120,284,971.38-165,993,260.58-65,280,827.88

Finding the Fourth Proportional to 120,284,971.38, 165,993,260.58 and 65,280,827.88

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Solution

The fourth proportional to 120,284,971.38, 165,993,260.58 and 65,280,827.88 is: 90,087,542.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,284,971.38 : 165,993,260.58 = 65,280,827.88 : x
  2. Step 2: Convert to fraction form
    120,284,971.38/165,993,260.58 = 65,280,827.88/x
  3. Step 3: Cross multiply
    120,284,971.38x = 165,993,260.58 × 65,280,827.88
  4. Step 4: Simplify right side
    120,284,971.38x = 10,836,177,473,162,970
  5. Step 5: Solve for x
    x = 10,836,177,473,162,970/120,284,971.38
  6. Step 6: Final answer
    x = 90,087,542.52

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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.