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Finding the Fourth Proportional to 115,894.53, 159,921.23 and 64,900.17

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Solution

The fourth proportional to 115,894.53, 159,921.23 and 64,900.17 is: 89,554.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,894.53 : 159,921.23 = 64,900.17 : x
  2. Step 2: Convert to fraction form
    115,894.53/159,921.23 = 64,900.17/x
  3. Step 3: Cross multiply
    115,894.53x = 159,921.23 × 64,900.17
  4. Step 4: Simplify right side
    115,894.53x = 10,378,914,689.11
  5. Step 5: Solve for x
    x = 10,378,914,689.11/115,894.53
  6. Step 6: Final answer
    x = 89,554.83

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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.