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Finding the Fourth Proportional to 155,804, 215,004.96 and 87,824.96

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Solution

The fourth proportional to 155,804, 215,004.96 and 87,824.96 is: 121,195.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,804 : 215,004.96 = 87,824.96 : x
  2. Step 2: Convert to fraction form
    155,804/215,004.96 = 87,824.96/x
  3. Step 3: Cross multiply
    155,804x = 215,004.96 × 87,824.96
  4. Step 4: Simplify right side
    155,804x = 18,882,802,011.80
  5. Step 5: Solve for x
    x = 18,882,802,011.80/155,804
  6. Step 6: Final answer
    x = 121,195.87

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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.