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Finding the Fourth Proportional to 123,415.85, 185,123.75 and 29,921.60

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Solution

The fourth proportional to 123,415.85, 185,123.75 and 29,921.60 is: 44,882.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,415.85 : 185,123.75 = 29,921.60 : x
  2. Step 2: Convert to fraction form
    123,415.85/185,123.75 = 29,921.60/x
  3. Step 3: Cross multiply
    123,415.85x = 185,123.75 × 29,921.60
  4. Step 4: Simplify right side
    123,415.85x = 5,539,197,722.77
  5. Step 5: Solve for x
    x = 5,539,197,722.77/123,415.85
  6. Step 6: Final answer
    x = 44,882.39

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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.