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Finding the Fourth Proportional to 115,789.92, 159,794.64 and 75,530.40

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Solution

The fourth proportional to 115,789.92, 159,794.64 and 75,530.40 is: 104,234.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,789.92 : 159,794.64 = 75,530.40 : x
  2. Step 2: Convert to fraction form
    115,789.92/159,794.64 = 75,530.40/x
  3. Step 3: Cross multiply
    115,789.92x = 159,794.64 × 75,530.40
  4. Step 4: Simplify right side
    115,789.92x = 12,069,353,077.06
  5. Step 5: Solve for x
    x = 12,069,353,077.06/115,789.92
  6. Step 6: Final answer
    x = 104,234.92

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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.