Home / 73,189.20-109,783.80-71,439.60

Finding the Fourth Proportional to 73,189.20, 109,783.80 and 71,439.60

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Solution

The fourth proportional to 73,189.20, 109,783.80 and 71,439.60 is: 107,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,189.20 : 109,783.80 = 71,439.60 : x
  2. Step 2: Convert to fraction form
    73,189.20/109,783.80 = 71,439.60/x
  3. Step 3: Cross multiply
    73,189.20x = 109,783.80 × 71,439.60
  4. Step 4: Simplify right side
    73,189.20x = 7,842,910,758.48
  5. Step 5: Solve for x
    x = 7,842,910,758.48/73,189.20
  6. Step 6: Final answer
    x = 107,159.40

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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.