Home / 120,371.49-166,166.30-79,560.20

Finding the Fourth Proportional to 120,371.49, 166,166.30 and 79,560.20

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Solution

The fourth proportional to 120,371.49, 166,166.30 and 79,560.20 is: 109,828.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,371.49 : 166,166.30 = 79,560.20 : x
  2. Step 2: Convert to fraction form
    120,371.49/166,166.30 = 79,560.20/x
  3. Step 3: Cross multiply
    120,371.49x = 166,166.30 × 79,560.20
  4. Step 4: Simplify right side
    120,371.49x = 13,220,224,675.58
  5. Step 5: Solve for x
    x = 13,220,224,675.58/120,371.49
  6. Step 6: Final answer
    x = 109,828.54

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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.