Home / 123,639.46-185,490.37-57,126.61

Finding the Fourth Proportional to 123,639.46, 185,490.37 and 57,126.61

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Solution

The fourth proportional to 123,639.46, 185,490.37 and 57,126.61 is: 85,704.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,639.46 : 185,490.37 = 57,126.61 : x
  2. Step 2: Convert to fraction form
    123,639.46/185,490.37 = 57,126.61/x
  3. Step 3: Cross multiply
    123,639.46x = 185,490.37 × 57,126.61
  4. Step 4: Simplify right side
    123,639.46x = 10,596,436,025.75
  5. Step 5: Solve for x
    x = 10,596,436,025.75/123,639.46
  6. Step 6: Final answer
    x = 85,704.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.