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Finding the Fourth Proportional to 155,586.74, 214,730.15 and 87,616.98

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Solution

The fourth proportional to 155,586.74, 214,730.15 and 87,616.98 is: 120,922.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,586.74 : 214,730.15 = 87,616.98 : x
  2. Step 2: Convert to fraction form
    155,586.74/214,730.15 = 87,616.98/x
  3. Step 3: Cross multiply
    155,586.74x = 214,730.15 × 87,616.98
  4. Step 4: Simplify right side
    155,586.74x = 18,814,006,819.86
  5. Step 5: Solve for x
    x = 18,814,006,819.86/155,586.74
  6. Step 6: Final answer
    x = 120,922.95

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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.