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Finding the Fourth Proportional to 146, 201.52 and 90.76

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Solution

The fourth proportional to 146, 201.52 and 90.76 is: 125.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    146 : 201.52 = 90.76 : x
  2. Step 2: Convert to fraction form
    146/201.52 = 90.76/x
  3. Step 3: Cross multiply
    146x = 201.52 × 90.76
  4. Step 4: Simplify right side
    146x = 18,289.96
  5. Step 5: Solve for x
    x = 18,289.96/146
  6. Step 6: Final answer
    x = 125.27

Related Problems

Find fourth proportional to 73, 100.76 and 45.38
Half scale
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Double scale
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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.