Home / 260,131.78-390,197.82-73,143.28

Finding the Fourth Proportional to 260,131.78, 390,197.82 and 73,143.28

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Solution

The fourth proportional to 260,131.78, 390,197.82 and 73,143.28 is: 109,714.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,131.78 : 390,197.82 = 73,143.28 : x
  2. Step 2: Convert to fraction form
    260,131.78/390,197.82 = 73,143.28/x
  3. Step 3: Cross multiply
    260,131.78x = 390,197.82 × 73,143.28
  4. Step 4: Simplify right side
    260,131.78x = 28,540,349,165.68
  5. Step 5: Solve for x
    x = 28,540,349,165.68/260,131.78
  6. Step 6: Final answer
    x = 109,714.96

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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.