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Finding the Fourth Proportional to 124.63, 172.12 and 94.67

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Solution

The fourth proportional to 124.63, 172.12 and 94.67 is: 130.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.63 : 172.12 = 94.67 : x
  2. Step 2: Convert to fraction form
    124.63/172.12 = 94.67/x
  3. Step 3: Cross multiply
    124.63x = 172.12 × 94.67
  4. Step 4: Simplify right side
    124.63x = 16,294.60
  5. Step 5: Solve for x
    x = 16,294.60/124.63
  6. Step 6: Final answer
    x = 130.74

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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.