Home / 131,115.40-196,770.30-86,727.40

Finding the Fourth Proportional to 131,115.40, 196,770.30 and 86,727.40

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Solution

The fourth proportional to 131,115.40, 196,770.30 and 86,727.40 is: 130,155.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,115.40 : 196,770.30 = 86,727.40 : x
  2. Step 2: Convert to fraction form
    131,115.40/196,770.30 = 86,727.40/x
  3. Step 3: Cross multiply
    131,115.40x = 196,770.30 × 86,727.40
  4. Step 4: Simplify right side
    131,115.40x = 17,065,376,516.22
  5. Step 5: Solve for x
    x = 17,065,376,516.22/131,115.40
  6. Step 6: Final answer
    x = 130,155.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.