Home / 105,540.20-157,964.70-82,039.40

Finding the Fourth Proportional to 105,540.20, 157,964.70 and 82,039.40

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Solution

The fourth proportional to 105,540.20, 157,964.70 and 82,039.40 is: 122,790.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,540.20 : 157,964.70 = 82,039.40 : x
  2. Step 2: Convert to fraction form
    105,540.20/157,964.70 = 82,039.40/x
  3. Step 3: Cross multiply
    105,540.20x = 157,964.70 × 82,039.40
  4. Step 4: Simplify right side
    105,540.20x = 12,959,329,209.18
  5. Step 5: Solve for x
    x = 12,959,329,209.18/105,540.20
  6. Step 6: Final answer
    x = 122,790.46

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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.