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Finding the Fourth Proportional to 158,708.94, 219,010.82 and 87,087.39

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Solution

The fourth proportional to 158,708.94, 219,010.82 and 87,087.39 is: 120,176.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,708.94 : 219,010.82 = 87,087.39 : x
  2. Step 2: Convert to fraction form
    158,708.94/219,010.82 = 87,087.39/x
  3. Step 3: Cross multiply
    158,708.94x = 219,010.82 × 87,087.39
  4. Step 4: Simplify right side
    158,708.94x = 19,073,080,260.12
  5. Step 5: Solve for x
    x = 19,073,080,260.12/158,708.94
  6. Step 6: Final answer
    x = 120,176.47

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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.