Home / 81,244.71-121,327.22-80,365.05

Finding the Fourth Proportional to 81,244.71, 121,327.22 and 80,365.05

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Solution

The fourth proportional to 81,244.71, 121,327.22 and 80,365.05 is: 120,013.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,244.71 : 121,327.22 = 80,365.05 : x
  2. Step 2: Convert to fraction form
    81,244.71/121,327.22 = 80,365.05/x
  3. Step 3: Cross multiply
    81,244.71x = 121,327.22 × 80,365.05
  4. Step 4: Simplify right side
    81,244.71x = 9,750,468,101.66
  5. Step 5: Solve for x
    x = 9,750,468,101.66/81,244.71
  6. Step 6: Final answer
    x = 120,013.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.