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Finding the Fourth Proportional to 115,291.62, 159,101.01 and 64,990.62

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Solution

The fourth proportional to 115,291.62, 159,101.01 and 64,990.62 is: 89,686.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,291.62 : 159,101.01 = 64,990.62 : x
  2. Step 2: Convert to fraction form
    115,291.62/159,101.01 = 64,990.62/x
  3. Step 3: Cross multiply
    115,291.62x = 159,101.01 × 64,990.62
  4. Step 4: Simplify right side
    115,291.62x = 10,340,073,282.53
  5. Step 5: Solve for x
    x = 10,340,073,282.53/115,291.62
  6. Step 6: Final answer
    x = 89,686.25

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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.