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Finding the Fourth Proportional to 159,095.06, 219,552.01 and 87,479.70

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Solution

The fourth proportional to 159,095.06, 219,552.01 and 87,479.70 is: 120,722.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,095.06 : 219,552.01 = 87,479.70 : x
  2. Step 2: Convert to fraction form
    159,095.06/219,552.01 = 87,479.70/x
  3. Step 3: Cross multiply
    159,095.06x = 219,552.01 × 87,479.70
  4. Step 4: Simplify right side
    159,095.06x = 19,206,342,927.18
  5. Step 5: Solve for x
    x = 19,206,342,927.18/159,095.06
  6. Step 6: Final answer
    x = 120,722.44

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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.