Home / 110,839.60-166,259.40-81,315.10

Finding the Fourth Proportional to 110,839.60, 166,259.40 and 81,315.10

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Solution

The fourth proportional to 110,839.60, 166,259.40 and 81,315.10 is: 121,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,839.60 : 166,259.40 = 81,315.10 : x
  2. Step 2: Convert to fraction form
    110,839.60/166,259.40 = 81,315.10/x
  3. Step 3: Cross multiply
    110,839.60x = 166,259.40 × 81,315.10
  4. Step 4: Simplify right side
    110,839.60x = 13,519,399,736.94
  5. Step 5: Solve for x
    x = 13,519,399,736.94/110,839.60
  6. Step 6: Final answer
    x = 121,972.65

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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.