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Finding the Fourth Proportional to 158,342.88, 218,513.25 and 86,727.42

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Solution

The fourth proportional to 158,342.88, 218,513.25 and 86,727.42 is: 119,683.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,342.88 : 218,513.25 = 86,727.42 : x
  2. Step 2: Convert to fraction form
    158,342.88/218,513.25 = 86,727.42/x
  3. Step 3: Cross multiply
    158,342.88x = 218,513.25 × 86,727.42
  4. Step 4: Simplify right side
    158,342.88x = 18,951,090,408.32
  5. Step 5: Solve for x
    x = 18,951,090,408.32/158,342.88
  6. Step 6: Final answer
    x = 119,683.88

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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.