Home / 138,014.13-206,873.55-71,387.18

Finding the Fourth Proportional to 138,014.13, 206,873.55 and 71,387.18

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Solution

The fourth proportional to 138,014.13, 206,873.55 and 71,387.18 is: 107,004.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,014.13 : 206,873.55 = 71,387.18 : x
  2. Step 2: Convert to fraction form
    138,014.13/206,873.55 = 71,387.18/x
  3. Step 3: Cross multiply
    138,014.13x = 206,873.55 × 71,387.18
  4. Step 4: Simplify right side
    138,014.13x = 14,768,119,351.09
  5. Step 5: Solve for x
    x = 14,768,119,351.09/138,014.13
  6. Step 6: Final answer
    x = 107,004.40

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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.