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Finding the Fourth Proportional to 158,527.14, 218,761.63 and 86,905.59

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Solution

The fourth proportional to 158,527.14, 218,761.63 and 86,905.59 is: 119,926.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,527.14 : 218,761.63 = 86,905.59 : x
  2. Step 2: Convert to fraction form
    158,527.14/218,761.63 = 86,905.59/x
  3. Step 3: Cross multiply
    158,527.14x = 218,761.63 × 86,905.59
  4. Step 4: Simplify right side
    158,527.14x = 19,011,608,524.51
  5. Step 5: Solve for x
    x = 19,011,608,524.51/158,527.14
  6. Step 6: Final answer
    x = 119,926.52

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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.