Home / 109,126.64-150,615.45-68,309.75

Finding the Fourth Proportional to 109,126.64, 150,615.45 and 68,309.75

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Solution

The fourth proportional to 109,126.64, 150,615.45 and 68,309.75 is: 94,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,126.64 : 150,615.45 = 68,309.75 : x
  2. Step 2: Convert to fraction form
    109,126.64/150,615.45 = 68,309.75/x
  3. Step 3: Cross multiply
    109,126.64x = 150,615.45 × 68,309.75
  4. Step 4: Simplify right side
    109,126.64x = 10,288,502,982.56
  5. Step 5: Solve for x
    x = 10,288,502,982.56/109,126.64
  6. Step 6: Final answer
    x = 94,280.40

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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.