Home / 87,120.56-120,185.16-58,836.08

Finding the Fourth Proportional to 87,120.56, 120,185.16 and 58,836.08

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Solution

The fourth proportional to 87,120.56, 120,185.16 and 58,836.08 is: 81,165.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,120.56 : 120,185.16 = 58,836.08 : x
  2. Step 2: Convert to fraction form
    87,120.56/120,185.16 = 58,836.08/x
  3. Step 3: Cross multiply
    87,120.56x = 120,185.16 × 58,836.08
  4. Step 4: Simplify right side
    87,120.56x = 7,071,223,688.57
  5. Step 5: Solve for x
    x = 7,071,223,688.57/87,120.56
  6. Step 6: Final answer
    x = 81,165.96

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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.