Home / 260,127.28-390,191.07-73,138.78

Finding the Fourth Proportional to 260,127.28, 390,191.07 and 73,138.78

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Solution

The fourth proportional to 260,127.28, 390,191.07 and 73,138.78 is: 109,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,127.28 : 390,191.07 = 73,138.78 : x
  2. Step 2: Convert to fraction form
    260,127.28/390,191.07 = 73,138.78/x
  3. Step 3: Cross multiply
    260,127.28x = 390,191.07 × 73,138.78
  4. Step 4: Simplify right side
    260,127.28x = 28,538,099,588.70
  5. Step 5: Solve for x
    x = 28,538,099,588.70/260,127.28
  6. Step 6: Final answer
    x = 109,708.21

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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.