Home / 135,282.16-186,718.80-78,700.96

Finding the Fourth Proportional to 135,282.16, 186,718.80 and 78,700.96

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Solution

The fourth proportional to 135,282.16, 186,718.80 and 78,700.96 is: 108,624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,282.16 : 186,718.80 = 78,700.96 : x
  2. Step 2: Convert to fraction form
    135,282.16/186,718.80 = 78,700.96/x
  3. Step 3: Cross multiply
    135,282.16x = 186,718.80 × 78,700.96
  4. Step 4: Simplify right side
    135,282.16x = 14,694,948,810.05
  5. Step 5: Solve for x
    x = 14,694,948,810.05/135,282.16
  6. Step 6: Final answer
    x = 108,624.44

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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.