Home / 137,427.28-190,031.40-109,083.76

Finding the Fourth Proportional to 137,427.28, 190,031.40 and 109,083.76

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Solution

The fourth proportional to 137,427.28, 190,031.40 and 109,083.76 is: 150,838.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,427.28 : 190,031.40 = 109,083.76 : x
  2. Step 2: Convert to fraction form
    137,427.28/190,031.40 = 109,083.76/x
  3. Step 3: Cross multiply
    137,427.28x = 190,031.40 × 109,083.76
  4. Step 4: Simplify right side
    137,427.28x = 20,729,339,630.06
  5. Step 5: Solve for x
    x = 20,729,339,630.06/137,427.28
  6. Step 6: Final answer
    x = 150,838.61

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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.