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Finding the Fourth Proportional to 103,658.80, 155,293.80 and 96,660.40

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Solution

The fourth proportional to 103,658.80, 155,293.80 and 96,660.40 is: 144,809.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,658.80 : 155,293.80 = 96,660.40 : x
  2. Step 2: Convert to fraction form
    103,658.80/155,293.80 = 96,660.40/x
  3. Step 3: Cross multiply
    103,658.80x = 155,293.80 × 96,660.40
  4. Step 4: Simplify right side
    103,658.80x = 15,010,760,825.52
  5. Step 5: Solve for x
    x = 15,010,760,825.52/103,658.80
  6. Step 6: Final answer
    x = 144,809.32

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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.