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Finding the Fourth Proportional to 115,502.68, 159,390.41 and 64,513.92

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Solution

The fourth proportional to 115,502.68, 159,390.41 and 64,513.92 is: 89,027.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,502.68 : 159,390.41 = 64,513.92 : x
  2. Step 2: Convert to fraction form
    115,502.68/159,390.41 = 64,513.92/x
  3. Step 3: Cross multiply
    115,502.68x = 159,390.41 × 64,513.92
  4. Step 4: Simplify right side
    115,502.68x = 10,282,899,719.53
  5. Step 5: Solve for x
    x = 10,282,899,719.53/115,502.68
  6. Step 6: Final answer
    x = 89,027.37

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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.