Home / 109,650.40-151,321.20-67,200.72

Finding the Fourth Proportional to 109,650.40, 151,321.20 and 67,200.72

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Solution

The fourth proportional to 109,650.40, 151,321.20 and 67,200.72 is: 92,739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,650.40 : 151,321.20 = 67,200.72 : x
  2. Step 2: Convert to fraction form
    109,650.40/151,321.20 = 67,200.72/x
  3. Step 3: Cross multiply
    109,650.40x = 151,321.20 × 67,200.72
  4. Step 4: Simplify right side
    109,650.40x = 10,168,893,591.26
  5. Step 5: Solve for x
    x = 10,168,893,591.26/109,650.40
  6. Step 6: Final answer
    x = 92,739.23

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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.