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Finding the Fourth Proportional to 89,751.60, 134,627.40 and 81,003.60

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Solution

The fourth proportional to 89,751.60, 134,627.40 and 81,003.60 is: 121,505.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,751.60 : 134,627.40 = 81,003.60 : x
  2. Step 2: Convert to fraction form
    89,751.60/134,627.40 = 81,003.60/x
  3. Step 3: Cross multiply
    89,751.60x = 134,627.40 × 81,003.60
  4. Step 4: Simplify right side
    89,751.60x = 10,905,304,058.64
  5. Step 5: Solve for x
    x = 10,905,304,058.64/89,751.60
  6. Step 6: Final answer
    x = 121,505.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.