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Finding the Fourth Proportional to 111,508.80, 167,036.40 and 69,259.20

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Solution

The fourth proportional to 111,508.80, 167,036.40 and 69,259.20 is: 103,747.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,508.80 : 167,036.40 = 69,259.20 : x
  2. Step 2: Convert to fraction form
    111,508.80/167,036.40 = 69,259.20/x
  3. Step 3: Cross multiply
    111,508.80x = 167,036.40 × 69,259.20
  4. Step 4: Simplify right side
    111,508.80x = 11,568,807,434.88
  5. Step 5: Solve for x
    x = 11,568,807,434.88/111,508.80
  6. Step 6: Final answer
    x = 103,747.93

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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.