Home / 136,727.20-205,090.80-125,322.40

Finding the Fourth Proportional to 136,727.20, 205,090.80 and 125,322.40

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Solution

The fourth proportional to 136,727.20, 205,090.80 and 125,322.40 is: 187,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,727.20 : 205,090.80 = 125,322.40 : x
  2. Step 2: Convert to fraction form
    136,727.20/205,090.80 = 125,322.40/x
  3. Step 3: Cross multiply
    136,727.20x = 205,090.80 × 125,322.40
  4. Step 4: Simplify right side
    136,727.20x = 25,702,471,273.92
  5. Step 5: Solve for x
    x = 25,702,471,273.92/136,727.20
  6. Step 6: Final answer
    x = 187,983.60

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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.