Home / 132,738.91-183,178.81-72,309.60

Finding the Fourth Proportional to 132,738.91, 183,178.81 and 72,309.60

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Solution

The fourth proportional to 132,738.91, 183,178.81 and 72,309.60 is: 99,786.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,738.91 : 183,178.81 = 72,309.60 : x
  2. Step 2: Convert to fraction form
    132,738.91/183,178.81 = 72,309.60/x
  3. Step 3: Cross multiply
    132,738.91x = 183,178.81 × 72,309.60
  4. Step 4: Simplify right side
    132,738.91x = 13,245,586,109.00
  5. Step 5: Solve for x
    x = 13,245,586,109.00/132,738.91
  6. Step 6: Final answer
    x = 99,786.76

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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.