Home / 109,429.92-151,029.36-66,981.60

Finding the Fourth Proportional to 109,429.92, 151,029.36 and 66,981.60

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Solution

The fourth proportional to 109,429.92, 151,029.36 and 66,981.60 is: 92,444.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,429.92 : 151,029.36 = 66,981.60 : x
  2. Step 2: Convert to fraction form
    109,429.92/151,029.36 = 66,981.60/x
  3. Step 3: Cross multiply
    109,429.92x = 151,029.36 × 66,981.60
  4. Step 4: Simplify right side
    109,429.92x = 10,116,188,179.78
  5. Step 5: Solve for x
    x = 10,116,188,179.78/109,429.92
  6. Step 6: Final answer
    x = 92,444.44

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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.