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Finding the Fourth Proportional to 115,818.82, 159,845.04 and 64,850.98

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Solution

The fourth proportional to 115,818.82, 159,845.04 and 64,850.98 is: 89,502.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,818.82 : 159,845.04 = 64,850.98 : x
  2. Step 2: Convert to fraction form
    115,818.82/159,845.04 = 64,850.98/x
  3. Step 3: Cross multiply
    115,818.82x = 159,845.04 × 64,850.98
  4. Step 4: Simplify right side
    115,818.82x = 10,366,107,492.14
  5. Step 5: Solve for x
    x = 10,366,107,492.14/115,818.82
  6. Step 6: Final answer
    x = 89,502.79

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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.