Home / 88,221.57-121,705.38-66,672.33

Finding the Fourth Proportional to 88,221.57, 121,705.38 and 66,672.33

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Solution

The fourth proportional to 88,221.57, 121,705.38 and 66,672.33 is: 91,977.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,221.57 : 121,705.38 = 66,672.33 : x
  2. Step 2: Convert to fraction form
    88,221.57/121,705.38 = 66,672.33/x
  3. Step 3: Cross multiply
    88,221.57x = 121,705.38 × 66,672.33
  4. Step 4: Simplify right side
    88,221.57x = 8,114,381,258.14
  5. Step 5: Solve for x
    x = 8,114,381,258.14/88,221.57
  6. Step 6: Final answer
    x = 91,977.29

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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.