Home / 156,825.05-235,007.87-77,781.47

Finding the Fourth Proportional to 156,825.05, 235,007.87 and 77,781.47

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Solution

The fourth proportional to 156,825.05, 235,007.87 and 77,781.47 is: 116,558.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,825.05 : 235,007.87 = 77,781.47 : x
  2. Step 2: Convert to fraction form
    156,825.05/235,007.87 = 77,781.47/x
  3. Step 3: Cross multiply
    156,825.05x = 235,007.87 × 77,781.47
  4. Step 4: Simplify right side
    156,825.05x = 18,279,256,026.22
  5. Step 5: Solve for x
    x = 18,279,256,026.22/156,825.05
  6. Step 6: Final answer
    x = 116,558.27

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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.