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Finding the Fourth Proportional to 109,166.76, 150,647.88 and 61,419.60

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Solution

The fourth proportional to 109,166.76, 150,647.88 and 61,419.60 is: 84,757.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,166.76 : 150,647.88 = 61,419.60 : x
  2. Step 2: Convert to fraction form
    109,166.76/150,647.88 = 61,419.60/x
  3. Step 3: Cross multiply
    109,166.76x = 150,647.88 × 61,419.60
  4. Step 4: Simplify right side
    109,166.76x = 9,252,732,530.45
  5. Step 5: Solve for x
    x = 9,252,732,530.45/109,166.76
  6. Step 6: Final answer
    x = 84,757.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.