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Finding the Fourth Proportional to 153,015.53, 211,100.99 and 88,472.97

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Solution

The fourth proportional to 153,015.53, 211,100.99 and 88,472.97 is: 122,057.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,015.53 : 211,100.99 = 88,472.97 : x
  2. Step 2: Convert to fraction form
    153,015.53/211,100.99 = 88,472.97/x
  3. Step 3: Cross multiply
    153,015.53x = 211,100.99 × 88,472.97
  4. Step 4: Simplify right side
    153,015.53x = 18,676,731,112.88
  5. Step 5: Solve for x
    x = 18,676,731,112.88/153,015.53
  6. Step 6: Final answer
    x = 122,057.75

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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.