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Finding the Fourth Proportional to 111,242.88, 153,662.40 and 82,899.36

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Solution

The fourth proportional to 111,242.88, 153,662.40 and 82,899.36 is: 114,510.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,242.88 : 153,662.40 = 82,899.36 : x
  2. Step 2: Convert to fraction form
    111,242.88/153,662.40 = 82,899.36/x
  3. Step 3: Cross multiply
    111,242.88x = 153,662.40 × 82,899.36
  4. Step 4: Simplify right side
    111,242.88x = 12,738,514,616.06
  5. Step 5: Solve for x
    x = 12,738,514,616.06/111,242.88
  6. Step 6: Final answer
    x = 114,510.83

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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.