Home / 156,678.88-234,784.96-86,578.24

Finding the Fourth Proportional to 156,678.88, 234,784.96 and 86,578.24

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Solution

The fourth proportional to 156,678.88, 234,784.96 and 86,578.24 is: 129,738.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,678.88 : 234,784.96 = 86,578.24 : x
  2. Step 2: Convert to fraction form
    156,678.88/234,784.96 = 86,578.24/x
  3. Step 3: Cross multiply
    156,678.88x = 234,784.96 × 86,578.24
  4. Step 4: Simplify right side
    156,678.88x = 20,327,268,615.27
  5. Step 5: Solve for x
    x = 20,327,268,615.27/156,678.88
  6. Step 6: Final answer
    x = 129,738.41

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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.