Home / 142,711.27-196,982.09-86,126.29

Finding the Fourth Proportional to 142,711.27, 196,982.09 and 86,126.29

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Solution

The fourth proportional to 142,711.27, 196,982.09 and 86,126.29 is: 118,878.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,711.27 : 196,982.09 = 86,126.29 : x
  2. Step 2: Convert to fraction form
    142,711.27/196,982.09 = 86,126.29/x
  3. Step 3: Cross multiply
    142,711.27x = 196,982.09 × 86,126.29
  4. Step 4: Simplify right side
    142,711.27x = 16,965,336,608.15
  5. Step 5: Solve for x
    x = 16,965,336,608.15/142,711.27
  6. Step 6: Final answer
    x = 118,878.74

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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.