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Finding the Fourth Proportional to 158,722.95, 219,044 and 87,105.54

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Solution

The fourth proportional to 158,722.95, 219,044 and 87,105.54 is: 120,209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,722.95 : 219,044 = 87,105.54 : x
  2. Step 2: Convert to fraction form
    158,722.95/219,044 = 87,105.54/x
  3. Step 3: Cross multiply
    158,722.95x = 219,044 × 87,105.54
  4. Step 4: Simplify right side
    158,722.95x = 19,079,945,903.76
  5. Step 5: Solve for x
    x = 19,079,945,903.76/158,722.95
  6. Step 6: Final answer
    x = 120,209.12

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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.