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Finding the Fourth Proportional to 88,155.64, 121,665.90 and 54,626.68

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Solution

The fourth proportional to 88,155.64, 121,665.90 and 54,626.68 is: 75,391.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,155.64 : 121,665.90 = 54,626.68 : x
  2. Step 2: Convert to fraction form
    88,155.64/121,665.90 = 54,626.68/x
  3. Step 3: Cross multiply
    88,155.64x = 121,665.90 × 54,626.68
  4. Step 4: Simplify right side
    88,155.64x = 6,646,204,186.21
  5. Step 5: Solve for x
    x = 6,646,204,186.21/88,155.64
  6. Step 6: Final answer
    x = 75,391.71

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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.