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Finding the Fourth Proportional to 128,098.71, 192,155.06 and 53,226.43

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Solution

The fourth proportional to 128,098.71, 192,155.06 and 53,226.43 is: 79,842.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,098.71 : 192,155.06 = 53,226.43 : x
  2. Step 2: Convert to fraction form
    128,098.71/192,155.06 = 53,226.43/x
  3. Step 3: Cross multiply
    128,098.71x = 192,155.06 × 53,226.43
  4. Step 4: Simplify right side
    128,098.71x = 10,227,726,889.46
  5. Step 5: Solve for x
    x = 10,227,726,889.46/128,098.71
  6. Step 6: Final answer
    x = 79,842.54

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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.