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Finding the Fourth Proportional to 158,063.26, 218,130.48 and 86,447.88

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Solution

The fourth proportional to 158,063.26, 218,130.48 and 86,447.88 is: 119,299.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,063.26 : 218,130.48 = 86,447.88 : x
  2. Step 2: Convert to fraction form
    158,063.26/218,130.48 = 86,447.88/x
  3. Step 3: Cross multiply
    158,063.26x = 218,130.48 × 86,447.88
  4. Step 4: Simplify right side
    158,063.26x = 18,856,917,559.38
  5. Step 5: Solve for x
    x = 18,856,917,559.38/158,063.26
  6. Step 6: Final answer
    x = 119,299.81

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1.5x scale

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.