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Finding the Fourth Proportional to 159,112.42, 219,580.79 and 87,497.89

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Solution

The fourth proportional to 159,112.42, 219,580.79 and 87,497.89 is: 120,750.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,112.42 : 219,580.79 = 87,497.89 : x
  2. Step 2: Convert to fraction form
    159,112.42/219,580.79 = 87,497.89/x
  3. Step 3: Cross multiply
    159,112.42x = 219,580.79 × 87,497.89
  4. Step 4: Simplify right side
    159,112.42x = 19,212,854,823.09
  5. Step 5: Solve for x
    x = 19,212,854,823.09/159,112.42
  6. Step 6: Final answer
    x = 120,750.19

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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.