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Finding the Fourth Proportional to 155,633.59, 214,772.07 and 87,650.70

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Solution

The fourth proportional to 155,633.59, 214,772.07 and 87,650.70 is: 120,956.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,633.59 : 214,772.07 = 87,650.70 : x
  2. Step 2: Convert to fraction form
    155,633.59/214,772.07 = 87,650.70/x
  3. Step 3: Cross multiply
    155,633.59x = 214,772.07 × 87,650.70
  4. Step 4: Simplify right side
    155,633.59x = 18,824,922,275.95
  5. Step 5: Solve for x
    x = 18,824,922,275.95/155,633.59
  6. Step 6: Final answer
    x = 120,956.68

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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.