Home / 115,235.64-159,157.60-76,928.49

Finding the Fourth Proportional to 115,235.64, 159,157.60 and 76,928.49

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Solution

The fourth proportional to 115,235.64, 159,157.60 and 76,928.49 is: 106,249.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,235.64 : 159,157.60 = 76,928.49 : x
  2. Step 2: Convert to fraction form
    115,235.64/159,157.60 = 76,928.49/x
  3. Step 3: Cross multiply
    115,235.64x = 159,157.60 × 76,928.49
  4. Step 4: Simplify right side
    115,235.64x = 12,243,753,647.70
  5. Step 5: Solve for x
    x = 12,243,753,647.70/115,235.64
  6. Step 6: Final answer
    x = 106,249.71

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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.