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Finding the Fourth Proportional to 109,809.60, 164,617.20 and 97,999.80

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Solution

The fourth proportional to 109,809.60, 164,617.20 and 97,999.80 is: 146,912.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,809.60 : 164,617.20 = 97,999.80 : x
  2. Step 2: Convert to fraction form
    109,809.60/164,617.20 = 97,999.80/x
  3. Step 3: Cross multiply
    109,809.60x = 164,617.20 × 97,999.80
  4. Step 4: Simplify right side
    109,809.60x = 16,132,452,676.56
  5. Step 5: Solve for x
    x = 16,132,452,676.56/109,809.60
  6. Step 6: Final answer
    x = 146,912.95

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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.