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Finding the Fourth Proportional to 110,715.21, 152,734.37 and 65,362.81

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Solution

The fourth proportional to 110,715.21, 152,734.37 and 65,362.81 is: 90,169.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,715.21 : 152,734.37 = 65,362.81 : x
  2. Step 2: Convert to fraction form
    110,715.21/152,734.37 = 65,362.81/x
  3. Step 3: Cross multiply
    110,715.21x = 152,734.37 × 65,362.81
  4. Step 4: Simplify right side
    110,715.21x = 9,983,146,754.94
  5. Step 5: Solve for x
    x = 9,983,146,754.94/110,715.21
  6. Step 6: Final answer
    x = 90,169.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.