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Finding the Fourth Proportional to 122,649.80, 183,974.70 and 38,416.55

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Solution

The fourth proportional to 122,649.80, 183,974.70 and 38,416.55 is: 57,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,649.80 : 183,974.70 = 38,416.55 : x
  2. Step 2: Convert to fraction form
    122,649.80/183,974.70 = 38,416.55/x
  3. Step 3: Cross multiply
    122,649.80x = 183,974.70 × 38,416.55
  4. Step 4: Simplify right side
    122,649.80x = 7,067,673,261.29
  5. Step 5: Solve for x
    x = 7,067,673,261.29/122,649.80
  6. Step 6: Final answer
    x = 57,624.83

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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.