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Finding the Fourth Proportional to 111,690, 167,559.72 and 36,807.12

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Solution

The fourth proportional to 111,690, 167,559.72 and 36,807.12 is: 55,218.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,690 : 167,559.72 = 36,807.12 : x
  2. Step 2: Convert to fraction form
    111,690/167,559.72 = 36,807.12/x
  3. Step 3: Cross multiply
    111,690x = 167,559.72 × 36,807.12
  4. Step 4: Simplify right side
    111,690x = 6,167,390,721.21
  5. Step 5: Solve for x
    x = 6,167,390,721.21/111,690
  6. Step 6: Final answer
    x = 55,218.83

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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.