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Finding the Fourth Proportional to 101,453.76, 152,195.20 and 31,339.20

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Solution

The fourth proportional to 101,453.76, 152,195.20 and 31,339.20 is: 47,013.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,453.76 : 152,195.20 = 31,339.20 : x
  2. Step 2: Convert to fraction form
    101,453.76/152,195.20 = 31,339.20/x
  3. Step 3: Cross multiply
    101,453.76x = 152,195.20 × 31,339.20
  4. Step 4: Simplify right side
    101,453.76x = 4,769,675,811.84
  5. Step 5: Solve for x
    x = 4,769,675,811.84/101,453.76
  6. Step 6: Final answer
    x = 47,013.30

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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.