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Finding the Fourth Proportional to 158,209.14, 218,327.31 and 86,588.97

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Solution

The fourth proportional to 158,209.14, 218,327.31 and 86,588.97 is: 119,492.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,209.14 : 218,327.31 = 86,588.97 : x
  2. Step 2: Convert to fraction form
    158,209.14/218,327.31 = 86,588.97/x
  3. Step 3: Cross multiply
    158,209.14x = 218,327.31 × 86,588.97
  4. Step 4: Simplify right side
    158,209.14x = 18,904,736,895.77
  5. Step 5: Solve for x
    x = 18,904,736,895.77/158,209.14
  6. Step 6: Final answer
    x = 119,492.07

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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.