Home / 109,394.08-150,975.20-66,980.80

Finding the Fourth Proportional to 109,394.08, 150,975.20 and 66,980.80

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Solution

The fourth proportional to 109,394.08, 150,975.20 and 66,980.80 is: 92,440.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,394.08 : 150,975.20 = 66,980.80 : x
  2. Step 2: Convert to fraction form
    109,394.08/150,975.20 = 66,980.80/x
  3. Step 3: Cross multiply
    109,394.08x = 150,975.20 × 66,980.80
  4. Step 4: Simplify right side
    109,394.08x = 10,112,439,676.16
  5. Step 5: Solve for x
    x = 10,112,439,676.16/109,394.08
  6. Step 6: Final answer
    x = 92,440.47

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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.