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Finding the Fourth Proportional to 128,581.34, 192,872.04 and 62,009.06

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Solution

The fourth proportional to 128,581.34, 192,872.04 and 62,009.06 is: 93,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,581.34 : 192,872.04 = 62,009.06 : x
  2. Step 2: Convert to fraction form
    128,581.34/192,872.04 = 62,009.06/x
  3. Step 3: Cross multiply
    128,581.34x = 192,872.04 × 62,009.06
  4. Step 4: Simplify right side
    128,581.34x = 11,959,813,900.68
  5. Step 5: Solve for x
    x = 11,959,813,900.68/128,581.34
  6. Step 6: Final answer
    x = 93,013.60

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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.