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Finding the Fourth Proportional to 115,843.52, 159,845.54 and 64,858.39

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Solution

The fourth proportional to 115,843.52, 159,845.54 and 64,858.39 is: 89,494.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,843.52 : 159,845.54 = 64,858.39 : x
  2. Step 2: Convert to fraction form
    115,843.52/159,845.54 = 64,858.39/x
  3. Step 3: Cross multiply
    115,843.52x = 159,845.54 × 64,858.39
  4. Step 4: Simplify right side
    115,843.52x = 10,367,323,649.17
  5. Step 5: Solve for x
    x = 10,367,323,649.17/115,843.52
  6. Step 6: Final answer
    x = 89,494.20

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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.