Home / 149,119.20-205,772.40-85,462.56

Finding the Fourth Proportional to 149,119.20, 205,772.40 and 85,462.56

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Solution

The fourth proportional to 149,119.20, 205,772.40 and 85,462.56 is: 117,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,119.20 : 205,772.40 = 85,462.56 : x
  2. Step 2: Convert to fraction form
    149,119.20/205,772.40 = 85,462.56/x
  3. Step 3: Cross multiply
    149,119.20x = 205,772.40 × 85,462.56
  4. Step 4: Simplify right side
    149,119.20x = 17,585,836,081.34
  5. Step 5: Solve for x
    x = 17,585,836,081.34/149,119.20
  6. Step 6: Final answer
    x = 117,931.40

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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.