Home / 137,119.56-189,219.42-76,687.08

Finding the Fourth Proportional to 137,119.56, 189,219.42 and 76,687.08

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Solution

The fourth proportional to 137,119.56, 189,219.42 and 76,687.08 is: 105,825.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,119.56 : 189,219.42 = 76,687.08 : x
  2. Step 2: Convert to fraction form
    137,119.56/189,219.42 = 76,687.08/x
  3. Step 3: Cross multiply
    137,119.56x = 189,219.42 × 76,687.08
  4. Step 4: Simplify right side
    137,119.56x = 14,510,684,799.09
  5. Step 5: Solve for x
    x = 14,510,684,799.09/137,119.56
  6. Step 6: Final answer
    x = 105,825.05

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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.