Home / 87,118.93-120,273.42-66,662.65

Finding the Fourth Proportional to 87,118.93, 120,273.42 and 66,662.65

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Solution

The fourth proportional to 87,118.93, 120,273.42 and 66,662.65 is: 92,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,118.93 : 120,273.42 = 66,662.65 : x
  2. Step 2: Convert to fraction form
    87,118.93/120,273.42 = 66,662.65/x
  3. Step 3: Cross multiply
    87,118.93x = 120,273.42 × 66,662.65
  4. Step 4: Simplify right side
    87,118.93x = 8,017,744,901.76
  5. Step 5: Solve for x
    x = 8,017,744,901.76/87,118.93
  6. Step 6: Final answer
    x = 92,032.18

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1.5x scale

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.