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Finding the Fourth Proportional to 128,394.92, 192,591.84 and 34,900.40

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Solution

The fourth proportional to 128,394.92, 192,591.84 and 34,900.40 is: 52,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,394.92 : 192,591.84 = 34,900.40 : x
  2. Step 2: Convert to fraction form
    128,394.92/192,591.84 = 34,900.40/x
  3. Step 3: Cross multiply
    128,394.92x = 192,591.84 × 34,900.40
  4. Step 4: Simplify right side
    128,394.92x = 6,721,532,252.74
  5. Step 5: Solve for x
    x = 6,721,532,252.74/128,394.92
  6. Step 6: Final answer
    x = 52,350.45

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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.