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Finding the Fourth Proportional to 103,653.28, 155,291.28 and 71,996.46

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Solution

The fourth proportional to 103,653.28, 155,291.28 and 71,996.46 is: 107,863.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,653.28 : 155,291.28 = 71,996.46 : x
  2. Step 2: Convert to fraction form
    103,653.28/155,291.28 = 71,996.46/x
  3. Step 3: Cross multiply
    103,653.28x = 155,291.28 × 71,996.46
  4. Step 4: Simplify right side
    103,653.28x = 11,180,422,428.87
  5. Step 5: Solve for x
    x = 11,180,422,428.87/103,653.28
  6. Step 6: Final answer
    x = 107,863.66

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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.