Home / 132,821.53-183,288.39-72,390.91

Finding the Fourth Proportional to 132,821.53, 183,288.39 and 72,390.91

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Solution

The fourth proportional to 132,821.53, 183,288.39 and 72,390.91 is: 99,896.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,821.53 : 183,288.39 = 72,390.91 : x
  2. Step 2: Convert to fraction form
    132,821.53/183,288.39 = 72,390.91/x
  3. Step 3: Cross multiply
    132,821.53x = 183,288.39 × 72,390.91
  4. Step 4: Simplify right side
    132,821.53x = 13,268,413,344.53
  5. Step 5: Solve for x
    x = 13,268,413,344.53/132,821.53
  6. Step 6: Final answer
    x = 99,896.56

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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.