Home / 88,221.28-121,869.24-80,249.44

Finding the Fourth Proportional to 88,221.28, 121,869.24 and 80,249.44

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Solution

The fourth proportional to 88,221.28, 121,869.24 and 80,249.44 is: 110,856.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,221.28 : 121,869.24 = 80,249.44 : x
  2. Step 2: Convert to fraction form
    88,221.28/121,869.24 = 80,249.44/x
  3. Step 3: Cross multiply
    88,221.28x = 121,869.24 × 80,249.44
  4. Step 4: Simplify right side
    88,221.28x = 9,779,938,263.23
  5. Step 5: Solve for x
    x = 9,779,938,263.23/88,221.28
  6. Step 6: Final answer
    x = 110,856.91

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1.5x scale

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.