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Finding the Fourth Proportional to 101,377.92, 151,920 and 69,755.52

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Solution

The fourth proportional to 101,377.92, 151,920 and 69,755.52 is: 104,532.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,377.92 : 151,920 = 69,755.52 : x
  2. Step 2: Convert to fraction form
    101,377.92/151,920 = 69,755.52/x
  3. Step 3: Cross multiply
    101,377.92x = 151,920 × 69,755.52
  4. Step 4: Simplify right side
    101,377.92x = 10,597,258,598.40
  5. Step 5: Solve for x
    x = 10,597,258,598.40/101,377.92
  6. Step 6: Final answer
    x = 104,532.22

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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.