Home / 78,167.31-117,222.25-26,861.43

Finding the Fourth Proportional to 78,167.31, 117,222.25 and 26,861.43

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Solution

The fourth proportional to 78,167.31, 117,222.25 and 26,861.43 is: 40,282.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,167.31 : 117,222.25 = 26,861.43 : x
  2. Step 2: Convert to fraction form
    78,167.31/117,222.25 = 26,861.43/x
  3. Step 3: Cross multiply
    78,167.31x = 117,222.25 × 26,861.43
  4. Step 4: Simplify right side
    78,167.31x = 3,148,757,262.82
  5. Step 5: Solve for x
    x = 3,148,757,262.82/78,167.31
  6. Step 6: Final answer
    x = 40,282.28

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1.5x scale

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.