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Finding the Fourth Proportional to 89,844.40, 134,507.40 and 87,252.40

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Solution

The fourth proportional to 89,844.40, 134,507.40 and 87,252.40 is: 130,626.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,844.40 : 134,507.40 = 87,252.40 : x
  2. Step 2: Convert to fraction form
    89,844.40/134,507.40 = 87,252.40/x
  3. Step 3: Cross multiply
    89,844.40x = 134,507.40 × 87,252.40
  4. Step 4: Simplify right side
    89,844.40x = 11,736,093,467.76
  5. Step 5: Solve for x
    x = 11,736,093,467.76/89,844.40
  6. Step 6: Final answer
    x = 130,626.88

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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.