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Finding the Fourth Proportional to 158,092.96, 218,163.66 and 86,471.45

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Solution

The fourth proportional to 158,092.96, 218,163.66 and 86,471.45 is: 119,328.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,092.96 : 218,163.66 = 86,471.45 : x
  2. Step 2: Convert to fraction form
    158,092.96/218,163.66 = 86,471.45/x
  3. Step 3: Cross multiply
    158,092.96x = 218,163.66 × 86,471.45
  4. Step 4: Simplify right side
    158,092.96x = 18,864,926,926.69
  5. Step 5: Solve for x
    x = 18,864,926,926.69/158,092.96
  6. Step 6: Final answer
    x = 119,328.06

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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.