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Finding the Fourth Proportional to 158,524.35, 218,761.05 and 86,904.96

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Solution

The fourth proportional to 158,524.35, 218,761.05 and 86,904.96 is: 119,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,524.35 : 218,761.05 = 86,904.96 : x
  2. Step 2: Convert to fraction form
    158,524.35/218,761.05 = 86,904.96/x
  3. Step 3: Cross multiply
    158,524.35x = 218,761.05 × 86,904.96
  4. Step 4: Simplify right side
    158,524.35x = 19,011,420,299.81
  5. Step 5: Solve for x
    x = 19,011,420,299.81/158,524.35
  6. Step 6: Final answer
    x = 119,927.45

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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.