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Finding the Fourth Proportional to 89,475.40, 134,097.90 and 68,595.40

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Solution

The fourth proportional to 89,475.40, 134,097.90 and 68,595.40 is: 102,804.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,475.40 : 134,097.90 = 68,595.40 : x
  2. Step 2: Convert to fraction form
    89,475.40/134,097.90 = 68,595.40/x
  3. Step 3: Cross multiply
    89,475.40x = 134,097.90 × 68,595.40
  4. Step 4: Simplify right side
    89,475.40x = 9,198,499,089.66
  5. Step 5: Solve for x
    x = 9,198,499,089.66/89,475.40
  6. Step 6: Final answer
    x = 102,804.78

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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.