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Finding the Fourth Proportional to 106.53, 147.02 and 59.90

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Solution

The fourth proportional to 106.53, 147.02 and 59.90 is: 82.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.53 : 147.02 = 59.90 : x
  2. Step 2: Convert to fraction form
    106.53/147.02 = 59.90/x
  3. Step 3: Cross multiply
    106.53x = 147.02 × 59.90
  4. Step 4: Simplify right side
    106.53x = 8,806.50
  5. Step 5: Solve for x
    x = 8,806.50/106.53
  6. Step 6: Final answer
    x = 82.67

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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.