Home / 137,090.20-189,184.98-79,743.28

Finding the Fourth Proportional to 137,090.20, 189,184.98 and 79,743.28

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Solution

The fourth proportional to 137,090.20, 189,184.98 and 79,743.28 is: 110,046.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,090.20 : 189,184.98 = 79,743.28 : x
  2. Step 2: Convert to fraction form
    137,090.20/189,184.98 = 79,743.28/x
  3. Step 3: Cross multiply
    137,090.20x = 189,184.98 × 79,743.28
  4. Step 4: Simplify right side
    137,090.20x = 15,086,230,831.93
  5. Step 5: Solve for x
    x = 15,086,230,831.93/137,090.20
  6. Step 6: Final answer
    x = 110,046.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.