Home / 112,871.30-155,778.26-69,864.59

Finding the Fourth Proportional to 112,871.30, 155,778.26 and 69,864.59

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Solution

The fourth proportional to 112,871.30, 155,778.26 and 69,864.59 is: 96,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,871.30 : 155,778.26 = 69,864.59 : x
  2. Step 2: Convert to fraction form
    112,871.30/155,778.26 = 69,864.59/x
  3. Step 3: Cross multiply
    112,871.30x = 155,778.26 × 69,864.59
  4. Step 4: Simplify right side
    112,871.30x = 10,883,383,137.60
  5. Step 5: Solve for x
    x = 10,883,383,137.60/112,871.30
  6. Step 6: Final answer
    x = 96,422.95

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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.