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Finding the Fourth Proportional to 128,472.01, 192,713.28 and 34,977.76

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Solution

The fourth proportional to 128,472.01, 192,713.28 and 34,977.76 is: 52,468.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,472.01 : 192,713.28 = 34,977.76 : x
  2. Step 2: Convert to fraction form
    128,472.01/192,713.28 = 34,977.76/x
  3. Step 3: Cross multiply
    128,472.01x = 192,713.28 × 34,977.76
  4. Step 4: Simplify right side
    128,472.01x = 6,740,678,856.65
  5. Step 5: Solve for x
    x = 6,740,678,856.65/128,472.01
  6. Step 6: Final answer
    x = 52,468.07

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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.