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Finding the Fourth Proportional to 109,328.64, 150,865.92 and 64,608

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Solution

The fourth proportional to 109,328.64, 150,865.92 and 64,608 is: 89,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,328.64 : 150,865.92 = 64,608 : x
  2. Step 2: Convert to fraction form
    109,328.64/150,865.92 = 64,608/x
  3. Step 3: Cross multiply
    109,328.64x = 150,865.92 × 64,608
  4. Step 4: Simplify right side
    109,328.64x = 9,747,145,359.36
  5. Step 5: Solve for x
    x = 9,747,145,359.36/109,328.64
  6. Step 6: Final answer
    x = 89,154.55

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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.