Home / 137,425.28-190,028.64-109,081.76

Finding the Fourth Proportional to 137,425.28, 190,028.64 and 109,081.76

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Solution

The fourth proportional to 137,425.28, 190,028.64 and 109,081.76 is: 150,835.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,425.28 : 190,028.64 = 109,081.76 : x
  2. Step 2: Convert to fraction form
    137,425.28/190,028.64 = 109,081.76/x
  3. Step 3: Cross multiply
    137,425.28x = 190,028.64 × 109,081.76
  4. Step 4: Simplify right side
    137,425.28x = 20,728,658,501.61
  5. Step 5: Solve for x
    x = 20,728,658,501.61/137,425.28
  6. Step 6: Final answer
    x = 150,835.85

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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.