Home / 109,749.20-164,623.80-107,999.60

Finding the Fourth Proportional to 109,749.20, 164,623.80 and 107,999.60

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Solution

The fourth proportional to 109,749.20, 164,623.80 and 107,999.60 is: 161,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,749.20 : 164,623.80 = 107,999.60 : x
  2. Step 2: Convert to fraction form
    109,749.20/164,623.80 = 107,999.60/x
  3. Step 3: Cross multiply
    109,749.20x = 164,623.80 × 107,999.60
  4. Step 4: Simplify right side
    109,749.20x = 17,779,304,550.48
  5. Step 5: Solve for x
    x = 17,779,304,550.48/109,749.20
  6. Step 6: Final answer
    x = 161,999.40

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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.