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Finding the Fourth Proportional to 103,618.70, 155,428.05 and 33,505.10

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Solution

The fourth proportional to 103,618.70, 155,428.05 and 33,505.10 is: 50,257.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.70 : 155,428.05 = 33,505.10 : x
  2. Step 2: Convert to fraction form
    103,618.70/155,428.05 = 33,505.10/x
  3. Step 3: Cross multiply
    103,618.70x = 155,428.05 × 33,505.10
  4. Step 4: Simplify right side
    103,618.70x = 5,207,632,358.06
  5. Step 5: Solve for x
    x = 5,207,632,358.06/103,618.70
  6. Step 6: Final answer
    x = 50,257.65

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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.