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Finding the Fourth Proportional to 158,265.04, 218,404.69 and 86,646.26

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Solution

The fourth proportional to 158,265.04, 218,404.69 and 86,646.26 is: 119,571.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,265.04 : 218,404.69 = 86,646.26 : x
  2. Step 2: Convert to fraction form
    158,265.04/218,404.69 = 86,646.26/x
  3. Step 3: Cross multiply
    158,265.04x = 218,404.69 × 86,646.26
  4. Step 4: Simplify right side
    158,265.04x = 18,923,949,554.96
  5. Step 5: Solve for x
    x = 18,923,949,554.96/158,265.04
  6. Step 6: Final answer
    x = 119,571.26

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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.