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Finding the Fourth Proportional to 103,675.15, 155,512.73 and 51,187.15

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Solution

The fourth proportional to 103,675.15, 155,512.73 and 51,187.15 is: 76,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,675.15 : 155,512.73 = 51,187.15 : x
  2. Step 2: Convert to fraction form
    103,675.15/155,512.73 = 51,187.15/x
  3. Step 3: Cross multiply
    103,675.15x = 155,512.73 × 51,187.15
  4. Step 4: Simplify right side
    103,675.15x = 7,960,253,437.42
  5. Step 5: Solve for x
    x = 7,960,253,437.42/103,675.15
  6. Step 6: Final answer
    x = 76,780.73

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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.