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Finding the Fourth Proportional to 101,415.40, 152,123.10 and 91,738.60

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Solution

The fourth proportional to 101,415.40, 152,123.10 and 91,738.60 is: 137,607.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,415.40 : 152,123.10 = 91,738.60 : x
  2. Step 2: Convert to fraction form
    101,415.40/152,123.10 = 91,738.60/x
  3. Step 3: Cross multiply
    101,415.40x = 152,123.10 × 91,738.60
  4. Step 4: Simplify right side
    101,415.40x = 13,955,560,221.66
  5. Step 5: Solve for x
    x = 13,955,560,221.66/101,415.40
  6. Step 6: Final answer
    x = 137,607.90

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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.