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Finding the Fourth Proportional to 115,832, 159,848.32 and 65,529.92

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Solution

The fourth proportional to 115,832, 159,848.32 and 65,529.92 is: 90,431.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,832 : 159,848.32 = 65,529.92 : x
  2. Step 2: Convert to fraction form
    115,832/159,848.32 = 65,529.92/x
  3. Step 3: Cross multiply
    115,832x = 159,848.32 × 65,529.92
  4. Step 4: Simplify right side
    115,832x = 10,474,847,621.73
  5. Step 5: Solve for x
    x = 10,474,847,621.73/115,832
  6. Step 6: Final answer
    x = 90,431.38

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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.