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Finding the Fourth Proportional to 103,673.72, 155,505.12 and 51,065.44

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Solution

The fourth proportional to 103,673.72, 155,505.12 and 51,065.44 is: 76,595.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,673.72 : 155,505.12 = 51,065.44 : x
  2. Step 2: Convert to fraction form
    103,673.72/155,505.12 = 51,065.44/x
  3. Step 3: Cross multiply
    103,673.72x = 155,505.12 × 51,065.44
  4. Step 4: Simplify right side
    103,673.72x = 7,940,936,794.79
  5. Step 5: Solve for x
    x = 7,940,936,794.79/103,673.72
  6. Step 6: Final answer
    x = 76,595.46

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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.