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Finding the Fourth Proportional to 158,273.96, 218,418.42 and 86,658.68

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Solution

The fourth proportional to 158,273.96, 218,418.42 and 86,658.68 is: 119,589.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,273.96 : 218,418.42 = 86,658.68 : x
  2. Step 2: Convert to fraction form
    158,273.96/218,418.42 = 86,658.68/x
  3. Step 3: Cross multiply
    158,273.96x = 218,418.42 × 86,658.68
  4. Step 4: Simplify right side
    158,273.96x = 18,927,851,964.89
  5. Step 5: Solve for x
    x = 18,927,851,964.89/158,273.96
  6. Step 6: Final answer
    x = 119,589.17

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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.