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Finding the Fourth Proportional to 159,134.71, 219,606.56 and 87,519.27

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Solution

The fourth proportional to 159,134.71, 219,606.56 and 87,519.27 is: 120,776.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,134.71 : 219,606.56 = 87,519.27 : x
  2. Step 2: Convert to fraction form
    159,134.71/219,606.56 = 87,519.27/x
  3. Step 3: Cross multiply
    159,134.71x = 219,606.56 × 87,519.27
  4. Step 4: Simplify right side
    159,134.71x = 19,219,805,818.41
  5. Step 5: Solve for x
    x = 19,219,805,818.41/159,134.71
  6. Step 6: Final answer
    x = 120,776.96

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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.