Home / 109,395.08-150,976.58-66,981.80

Finding the Fourth Proportional to 109,395.08, 150,976.58 and 66,981.80

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Solution

The fourth proportional to 109,395.08, 150,976.58 and 66,981.80 is: 92,441.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,395.08 : 150,976.58 = 66,981.80 : x
  2. Step 2: Convert to fraction form
    109,395.08/150,976.58 = 66,981.80/x
  3. Step 3: Cross multiply
    109,395.08x = 150,976.58 × 66,981.80
  4. Step 4: Simplify right side
    109,395.08x = 10,112,683,086.24
  5. Step 5: Solve for x
    x = 10,112,683,086.24/109,395.08
  6. Step 6: Final answer
    x = 92,441.85

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1.5x scale

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.