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Finding the Fourth Proportional to 176.65, 243.68 and 139.93

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Solution

The fourth proportional to 176.65, 243.68 and 139.93 is: 193.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.65 : 243.68 = 139.93 : x
  2. Step 2: Convert to fraction form
    176.65/243.68 = 139.93/x
  3. Step 3: Cross multiply
    176.65x = 243.68 × 139.93
  4. Step 4: Simplify right side
    176.65x = 34,096.83
  5. Step 5: Solve for x
    x = 34,096.83/176.65
  6. Step 6: Final answer
    x = 193.02

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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.