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Finding the Fourth Proportional to 101,849.80, 152,342.70 and 91,395.40

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Solution

The fourth proportional to 101,849.80, 152,342.70 and 91,395.40 is: 136,705.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,849.80 : 152,342.70 = 91,395.40 : x
  2. Step 2: Convert to fraction form
    101,849.80/152,342.70 = 91,395.40/x
  3. Step 3: Cross multiply
    101,849.80x = 152,342.70 × 91,395.40
  4. Step 4: Simplify right side
    101,849.80x = 13,923,422,003.58
  5. Step 5: Solve for x
    x = 13,923,422,003.58/101,849.80
  6. Step 6: Final answer
    x = 136,705.44

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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.