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Finding the Fourth Proportional to 111,628, 167,398.26 and 45,055.72

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Solution

The fourth proportional to 111,628, 167,398.26 and 45,055.72 is: 67,565.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,628 : 167,398.26 = 45,055.72 : x
  2. Step 2: Convert to fraction form
    111,628/167,398.26 = 45,055.72/x
  3. Step 3: Cross multiply
    111,628x = 167,398.26 × 45,055.72
  4. Step 4: Simplify right side
    111,628x = 7,542,249,131.05
  5. Step 5: Solve for x
    x = 7,542,249,131.05/111,628
  6. Step 6: Final answer
    x = 67,565.93

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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.