Home / 137,436.21-189,754.38-85,831.92

Finding the Fourth Proportional to 137,436.21, 189,754.38 and 85,831.92

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Solution

The fourth proportional to 137,436.21, 189,754.38 and 85,831.92 is: 118,505.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,436.21 : 189,754.38 = 85,831.92 : x
  2. Step 2: Convert to fraction form
    137,436.21/189,754.38 = 85,831.92/x
  3. Step 3: Cross multiply
    137,436.21x = 189,754.38 × 85,831.92
  4. Step 4: Simplify right side
    137,436.21x = 16,286,982,763.81
  5. Step 5: Solve for x
    x = 16,286,982,763.81/137,436.21
  6. Step 6: Final answer
    x = 118,505.76

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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.