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Finding the Fourth Proportional to 159,068.54, 219,511.68 and 87,447.92

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Solution

The fourth proportional to 159,068.54, 219,511.68 and 87,447.92 is: 120,676.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,068.54 : 219,511.68 = 87,447.92 : x
  2. Step 2: Convert to fraction form
    159,068.54/219,511.68 = 87,447.92/x
  3. Step 3: Cross multiply
    159,068.54x = 219,511.68 × 87,447.92
  4. Step 4: Simplify right side
    159,068.54x = 19,195,839,831.71
  5. Step 5: Solve for x
    x = 19,195,839,831.71/159,068.54
  6. Step 6: Final answer
    x = 120,676.53

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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.