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Finding the Fourth Proportional to 128,520.32, 192,775.67 and 33,749.64

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Solution

The fourth proportional to 128,520.32, 192,775.67 and 33,749.64 is: 50,623.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,520.32 : 192,775.67 = 33,749.64 : x
  2. Step 2: Convert to fraction form
    128,520.32/192,775.67 = 33,749.64/x
  3. Step 3: Cross multiply
    128,520.32x = 192,775.67 × 33,749.64
  4. Step 4: Simplify right side
    128,520.32x = 6,506,109,463.26
  5. Step 5: Solve for x
    x = 6,506,109,463.26/128,520.32
  6. Step 6: Final answer
    x = 50,623.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.