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Finding the Fourth Proportional to 128,118.29, 192,294.62 and 64,982.00

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Solution

The fourth proportional to 128,118.29, 192,294.62 and 64,982.00 is: 97,532.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,118.29 : 192,294.62 = 64,982.00 : x
  2. Step 2: Convert to fraction form
    128,118.29/192,294.62 = 64,982.00/x
  3. Step 3: Cross multiply
    128,118.29x = 192,294.62 × 64,982.00
  4. Step 4: Simplify right side
    128,118.29x = 12,495,687,710.46
  5. Step 5: Solve for x
    x = 12,495,687,710.46/128,118.29
  6. Step 6: Final answer
    x = 97,532.43

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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.