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Finding the Fourth Proportional to 116.07, 172.76 and 113.67

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Solution

The fourth proportional to 116.07, 172.76 and 113.67 is: 169.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.07 : 172.76 = 113.67 : x
  2. Step 2: Convert to fraction form
    116.07/172.76 = 113.67/x
  3. Step 3: Cross multiply
    116.07x = 172.76 × 113.67
  4. Step 4: Simplify right side
    116.07x = 19,637.06
  5. Step 5: Solve for x
    x = 19,637.06/116.07
  6. Step 6: Final answer
    x = 169.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.