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Finding the Fourth Proportional to 110,741.80, 166,112.70 and 76,916.20

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Solution

The fourth proportional to 110,741.80, 166,112.70 and 76,916.20 is: 115,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,741.80 : 166,112.70 = 76,916.20 : x
  2. Step 2: Convert to fraction form
    110,741.80/166,112.70 = 76,916.20/x
  3. Step 3: Cross multiply
    110,741.80x = 166,112.70 × 76,916.20
  4. Step 4: Simplify right side
    110,741.80x = 12,776,757,655.74
  5. Step 5: Solve for x
    x = 12,776,757,655.74/110,741.80
  6. Step 6: Final answer
    x = 115,374.30

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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.