Home / 122,113.89-168,522.35-71,118.41

Finding the Fourth Proportional to 122,113.89, 168,522.35 and 71,118.41

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Solution

The fourth proportional to 122,113.89, 168,522.35 and 71,118.41 is: 98,146.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,113.89 : 168,522.35 = 71,118.41 : x
  2. Step 2: Convert to fraction form
    122,113.89/168,522.35 = 71,118.41/x
  3. Step 3: Cross multiply
    122,113.89x = 168,522.35 × 71,118.41
  4. Step 4: Simplify right side
    122,113.89x = 11,985,040,383.26
  5. Step 5: Solve for x
    x = 11,985,040,383.26/122,113.89
  6. Step 6: Final answer
    x = 98,146.41

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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.