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Finding the Fourth Proportional to 111,041.97, 153,241.89 and 63,287.61

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Solution

The fourth proportional to 111,041.97, 153,241.89 and 63,287.61 is: 87,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,041.97 : 153,241.89 = 63,287.61 : x
  2. Step 2: Convert to fraction form
    111,041.97/153,241.89 = 63,287.61/x
  3. Step 3: Cross multiply
    111,041.97x = 153,241.89 × 63,287.61
  4. Step 4: Simplify right side
    111,041.97x = 9,698,312,653.54
  5. Step 5: Solve for x
    x = 9,698,312,653.54/111,041.97
  6. Step 6: Final answer
    x = 87,339.16

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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.