Home / 140,078.16-193,300.02-79,640.28

Finding the Fourth Proportional to 140,078.16, 193,300.02 and 79,640.28

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Solution

The fourth proportional to 140,078.16, 193,300.02 and 79,640.28 is: 109,899.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,078.16 : 193,300.02 = 79,640.28 : x
  2. Step 2: Convert to fraction form
    140,078.16/193,300.02 = 79,640.28/x
  3. Step 3: Cross multiply
    140,078.16x = 193,300.02 × 79,640.28
  4. Step 4: Simplify right side
    140,078.16x = 15,394,467,716.81
  5. Step 5: Solve for x
    x = 15,394,467,716.81/140,078.16
  6. Step 6: Final answer
    x = 109,899.13

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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.