Home / 111,515.45-153,893.62-63,117.38

Finding the Fourth Proportional to 111,515.45, 153,893.62 and 63,117.38

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Solution

The fourth proportional to 111,515.45, 153,893.62 and 63,117.38 is: 87,103.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,515.45 : 153,893.62 = 63,117.38 : x
  2. Step 2: Convert to fraction form
    111,515.45/153,893.62 = 63,117.38/x
  3. Step 3: Cross multiply
    111,515.45x = 153,893.62 × 63,117.38
  4. Step 4: Simplify right side
    111,515.45x = 9,713,361,691.09
  5. Step 5: Solve for x
    x = 9,713,361,691.09/111,515.45
  6. Step 6: Final answer
    x = 87,103.28

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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.