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Finding the Fourth Proportional to 109,371.65, 150,912.65 and 64,047.29

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Solution

The fourth proportional to 109,371.65, 150,912.65 and 64,047.29 is: 88,373.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,371.65 : 150,912.65 = 64,047.29 : x
  2. Step 2: Convert to fraction form
    109,371.65/150,912.65 = 64,047.29/x
  3. Step 3: Cross multiply
    109,371.65x = 150,912.65 × 64,047.29
  4. Step 4: Simplify right side
    109,371.65x = 9,665,545,664.77
  5. Step 5: Solve for x
    x = 9,665,545,664.77/109,371.65
  6. Step 6: Final answer
    x = 88,373.41

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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.