Home / 137,376.27-189,138.65-107,122.77

Finding the Fourth Proportional to 137,376.27, 189,138.65 and 107,122.77

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Solution

The fourth proportional to 137,376.27, 189,138.65 and 107,122.77 is: 147,485.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,376.27 : 189,138.65 = 107,122.77 : x
  2. Step 2: Convert to fraction form
    137,376.27/189,138.65 = 107,122.77/x
  3. Step 3: Cross multiply
    137,376.27x = 189,138.65 × 107,122.77
  4. Step 4: Simplify right side
    137,376.27x = 20,261,055,566.45
  5. Step 5: Solve for x
    x = 20,261,055,566.45/137,376.27
  6. Step 6: Final answer
    x = 147,485.85

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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.