Home / 122,438.75-168,909.77-82,110.47

Finding the Fourth Proportional to 122,438.75, 168,909.77 and 82,110.47

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Solution

The fourth proportional to 122,438.75, 168,909.77 and 82,110.47 is: 113,275.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,438.75 : 168,909.77 = 82,110.47 : x
  2. Step 2: Convert to fraction form
    122,438.75/168,909.77 = 82,110.47/x
  3. Step 3: Cross multiply
    122,438.75x = 168,909.77 × 82,110.47
  4. Step 4: Simplify right side
    122,438.75x = 13,869,259,963.02
  5. Step 5: Solve for x
    x = 13,869,259,963.02/122,438.75
  6. Step 6: Final answer
    x = 113,275.09

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1.5x scale

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.