Home / 126,885-190,320.30-38,136.72

Finding the Fourth Proportional to 126,885, 190,320.30 and 38,136.72

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Solution

The fourth proportional to 126,885, 190,320.30 and 38,136.72 is: 57,202.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,885 : 190,320.30 = 38,136.72 : x
  2. Step 2: Convert to fraction form
    126,885/190,320.30 = 38,136.72/x
  3. Step 3: Cross multiply
    126,885x = 190,320.30 × 38,136.72
  4. Step 4: Simplify right side
    126,885x = 7,258,191,991.42
  5. Step 5: Solve for x
    x = 7,258,191,991.42/126,885
  6. Step 6: Final answer
    x = 57,202.92

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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.