Home / 109,512.17-150,989.88-91,389.01

Finding the Fourth Proportional to 109,512.17, 150,989.88 and 91,389.01

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Solution

The fourth proportional to 109,512.17, 150,989.88 and 91,389.01 is: 126,002.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,512.17 : 150,989.88 = 91,389.01 : x
  2. Step 2: Convert to fraction form
    109,512.17/150,989.88 = 91,389.01/x
  3. Step 3: Cross multiply
    109,512.17x = 150,989.88 × 91,389.01
  4. Step 4: Simplify right side
    109,512.17x = 13,798,815,901.56
  5. Step 5: Solve for x
    x = 13,798,815,901.56/109,512.17
  6. Step 6: Final answer
    x = 126,002.57

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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.