Home / 141,821.78-195,723.08-78,165.50

Finding the Fourth Proportional to 141,821.78, 195,723.08 and 78,165.50

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Solution

The fourth proportional to 141,821.78, 195,723.08 and 78,165.50 is: 107,873.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,821.78 : 195,723.08 = 78,165.50 : x
  2. Step 2: Convert to fraction form
    141,821.78/195,723.08 = 78,165.50/x
  3. Step 3: Cross multiply
    141,821.78x = 195,723.08 × 78,165.50
  4. Step 4: Simplify right side
    141,821.78x = 15,298,791,040.30
  5. Step 5: Solve for x
    x = 15,298,791,040.30/141,821.78
  6. Step 6: Final answer
    x = 107,873.36

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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.