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Finding the Fourth Proportional to 115,907.25, 159,944.26 and 64,220.89

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Solution

The fourth proportional to 115,907.25, 159,944.26 and 64,220.89 is: 88,620.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,907.25 : 159,944.26 = 64,220.89 : x
  2. Step 2: Convert to fraction form
    115,907.25/159,944.26 = 64,220.89/x
  3. Step 3: Cross multiply
    115,907.25x = 159,944.26 × 64,220.89
  4. Step 4: Simplify right side
    115,907.25x = 10,271,762,727.59
  5. Step 5: Solve for x
    x = 10,271,762,727.59/115,907.25
  6. Step 6: Final answer
    x = 88,620.54

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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.