Home / 137,397.97-189,606.37-76,143.64

Finding the Fourth Proportional to 137,397.97, 189,606.37 and 76,143.64

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Solution

The fourth proportional to 137,397.97, 189,606.37 and 76,143.64 is: 105,076.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,397.97 : 189,606.37 = 76,143.64 : x
  2. Step 2: Convert to fraction form
    137,397.97/189,606.37 = 76,143.64/x
  3. Step 3: Cross multiply
    137,397.97x = 189,606.37 × 76,143.64
  4. Step 4: Simplify right side
    137,397.97x = 14,437,319,178.99
  5. Step 5: Solve for x
    x = 14,437,319,178.99/137,397.97
  6. Step 6: Final answer
    x = 105,076.66

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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.