Home / 109,270.64-150,720-66,755.36

Finding the Fourth Proportional to 109,270.64, 150,720 and 66,755.36

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Solution

The fourth proportional to 109,270.64, 150,720 and 66,755.36 is: 92,077.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,270.64 : 150,720 = 66,755.36 : x
  2. Step 2: Convert to fraction form
    109,270.64/150,720 = 66,755.36/x
  3. Step 3: Cross multiply
    109,270.64x = 150,720 × 66,755.36
  4. Step 4: Simplify right side
    109,270.64x = 10,061,367,859.20
  5. Step 5: Solve for x
    x = 10,061,367,859.20/109,270.64
  6. Step 6: Final answer
    x = 92,077.50

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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.