Home / 137,619.77-189,900.09-77,177.97

Finding the Fourth Proportional to 137,619.77, 189,900.09 and 77,177.97

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Solution

The fourth proportional to 137,619.77, 189,900.09 and 77,177.97 is: 106,497.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,619.77 : 189,900.09 = 77,177.97 : x
  2. Step 2: Convert to fraction form
    137,619.77/189,900.09 = 77,177.97/x
  3. Step 3: Cross multiply
    137,619.77x = 189,900.09 × 77,177.97
  4. Step 4: Simplify right side
    137,619.77x = 14,656,103,449.02
  5. Step 5: Solve for x
    x = 14,656,103,449.02/137,619.77
  6. Step 6: Final answer
    x = 106,497.08

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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.