Home / 137,142.14-189,273.66-76,716.14

Finding the Fourth Proportional to 137,142.14, 189,273.66 and 76,716.14

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Solution

The fourth proportional to 137,142.14, 189,273.66 and 76,716.14 is: 105,878.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,142.14 : 189,273.66 = 76,716.14 : x
  2. Step 2: Convert to fraction form
    137,142.14/189,273.66 = 76,716.14/x
  3. Step 3: Cross multiply
    137,142.14x = 189,273.66 × 76,716.14
  4. Step 4: Simplify right side
    137,142.14x = 14,520,344,598.87
  5. Step 5: Solve for x
    x = 14,520,344,598.87/137,142.14
  6. Step 6: Final answer
    x = 105,878.07

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1.5x scale

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.