Home / 136,990.11-189,104.57-83,292.29

Finding the Fourth Proportional to 136,990.11, 189,104.57 and 83,292.29

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Solution

The fourth proportional to 136,990.11, 189,104.57 and 83,292.29 is: 114,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,990.11 : 189,104.57 = 83,292.29 : x
  2. Step 2: Convert to fraction form
    136,990.11/189,104.57 = 83,292.29/x
  3. Step 3: Cross multiply
    136,990.11x = 189,104.57 × 83,292.29
  4. Step 4: Simplify right side
    136,990.11x = 15,750,952,684.77
  5. Step 5: Solve for x
    x = 15,750,952,684.77/136,990.11
  6. Step 6: Final answer
    x = 114,978.76

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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.