Home / 112,979.71-155,916.87-67,665.07

Finding the Fourth Proportional to 112,979.71, 155,916.87 and 67,665.07

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Solution

The fourth proportional to 112,979.71, 155,916.87 and 67,665.07 is: 93,380.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,979.71 : 155,916.87 = 67,665.07 : x
  2. Step 2: Convert to fraction form
    112,979.71/155,916.87 = 67,665.07/x
  3. Step 3: Cross multiply
    112,979.71x = 155,916.87 × 67,665.07
  4. Step 4: Simplify right side
    112,979.71x = 10,550,125,922.73
  5. Step 5: Solve for x
    x = 10,550,125,922.73/112,979.71
  6. Step 6: Final answer
    x = 93,380.71

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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.