Home / 137,028.56-189,100.42-76,601.66

Finding the Fourth Proportional to 137,028.56, 189,100.42 and 76,601.66

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Solution

The fourth proportional to 137,028.56, 189,100.42 and 76,601.66 is: 105,710.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,028.56 : 189,100.42 = 76,601.66 : x
  2. Step 2: Convert to fraction form
    137,028.56/189,100.42 = 76,601.66/x
  3. Step 3: Cross multiply
    137,028.56x = 189,100.42 × 76,601.66
  4. Step 4: Simplify right side
    137,028.56x = 14,485,406,078.70
  5. Step 5: Solve for x
    x = 14,485,406,078.70/137,028.56
  6. Step 6: Final answer
    x = 105,710.85

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1.5x scale

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.