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Finding the Fourth Proportional to 112,642.33, 168,823.05 and 98,568.94

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Solution

The fourth proportional to 112,642.33, 168,823.05 and 98,568.94 is: 147,730.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,642.33 : 168,823.05 = 98,568.94 : x
  2. Step 2: Convert to fraction form
    112,642.33/168,823.05 = 98,568.94/x
  3. Step 3: Cross multiply
    112,642.33x = 168,823.05 × 98,568.94
  4. Step 4: Simplify right side
    112,642.33x = 16,640,709,086.07
  5. Step 5: Solve for x
    x = 16,640,709,086.07/112,642.33
  6. Step 6: Final answer
    x = 147,730.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.