Home / 132,711.12-183,139.52-76,121.28

Finding the Fourth Proportional to 132,711.12, 183,139.52 and 76,121.28

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Solution

The fourth proportional to 132,711.12, 183,139.52 and 76,121.28 is: 105,046.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,711.12 : 183,139.52 = 76,121.28 : x
  2. Step 2: Convert to fraction form
    132,711.12/183,139.52 = 76,121.28/x
  3. Step 3: Cross multiply
    132,711.12x = 183,139.52 × 76,121.28
  4. Step 4: Simplify right side
    132,711.12x = 13,940,814,300.38
  5. Step 5: Solve for x
    x = 13,940,814,300.38/132,711.12
  6. Step 6: Final answer
    x = 105,046.32

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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.