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Finding the Fourth Proportional to 89,349.88, 134,652.32 and 80,476.32

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Solution

The fourth proportional to 89,349.88, 134,652.32 and 80,476.32 is: 121,279.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,349.88 : 134,652.32 = 80,476.32 : x
  2. Step 2: Convert to fraction form
    89,349.88/134,652.32 = 80,476.32/x
  3. Step 3: Cross multiply
    89,349.88x = 134,652.32 × 80,476.32
  4. Step 4: Simplify right side
    89,349.88x = 10,836,323,193.06
  5. Step 5: Solve for x
    x = 10,836,323,193.06/89,349.88
  6. Step 6: Final answer
    x = 121,279.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.