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Finding the Fourth Proportional to 160.88, 222 and 90.92

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Solution

The fourth proportional to 160.88, 222 and 90.92 is: 125.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.88 : 222 = 90.92 : x
  2. Step 2: Convert to fraction form
    160.88/222 = 90.92/x
  3. Step 3: Cross multiply
    160.88x = 222 × 90.92
  4. Step 4: Simplify right side
    160.88x = 20,184.24
  5. Step 5: Solve for x
    x = 20,184.24/160.88
  6. Step 6: Final answer
    x = 125.46

Related Problems

Find fourth proportional to 80.44, 111 and 45.46
Half scale
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Double scale
Find fourth proportional to 161.88, 223.38 and 91.92
Similar ratio
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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.