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Finding the Fourth Proportional to 152,915.58, 211,016.34 and 84,936.87

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Solution

The fourth proportional to 152,915.58, 211,016.34 and 84,936.87 is: 117,208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,915.58 : 211,016.34 = 84,936.87 : x
  2. Step 2: Convert to fraction form
    152,915.58/211,016.34 = 84,936.87/x
  3. Step 3: Cross multiply
    152,915.58x = 211,016.34 × 84,936.87
  4. Step 4: Simplify right side
    152,915.58x = 17,923,067,438.46
  5. Step 5: Solve for x
    x = 17,923,067,438.46/152,915.58
  6. Step 6: Final answer
    x = 117,208.90

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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.