Home / 128,080.17-191,726.60-109,184.49

Finding the Fourth Proportional to 128,080.17, 191,726.60 and 109,184.49

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Solution

The fourth proportional to 128,080.17, 191,726.60 and 109,184.49 is: 163,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,080.17 : 191,726.60 = 109,184.49 : x
  2. Step 2: Convert to fraction form
    128,080.17/191,726.60 = 109,184.49/x
  3. Step 3: Cross multiply
    128,080.17x = 191,726.60 × 109,184.49
  4. Step 4: Simplify right side
    128,080.17x = 20,933,570,494.51
  5. Step 5: Solve for x
    x = 20,933,570,494.51/128,080.17
  6. Step 6: Final answer
    x = 163,441.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.