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Finding the Fourth Proportional to 111,315.30, 166,989.15 and 36,417.30

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Solution

The fourth proportional to 111,315.30, 166,989.15 and 36,417.30 is: 54,631.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,315.30 : 166,989.15 = 36,417.30 : x
  2. Step 2: Convert to fraction form
    111,315.30/166,989.15 = 36,417.30/x
  3. Step 3: Cross multiply
    111,315.30x = 166,989.15 × 36,417.30
  4. Step 4: Simplify right side
    111,315.30x = 6,081,293,972.30
  5. Step 5: Solve for x
    x = 6,081,293,972.30/111,315.30
  6. Step 6: Final answer
    x = 54,631.25

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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.