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Finding the Fourth Proportional to 101,469.12, 152,204.71 and 45,312.09

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Solution

The fourth proportional to 101,469.12, 152,204.71 and 45,312.09 is: 67,968.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,469.12 : 152,204.71 = 45,312.09 : x
  2. Step 2: Convert to fraction form
    101,469.12/152,204.71 = 45,312.09/x
  3. Step 3: Cross multiply
    101,469.12x = 152,204.71 × 45,312.09
  4. Step 4: Simplify right side
    101,469.12x = 6,896,713,404.66
  5. Step 5: Solve for x
    x = 6,896,713,404.66/101,469.12
  6. Step 6: Final answer
    x = 67,968.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.