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Finding the Fourth Proportional to 114,712.38, 158,297.70 and 63,728.40

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Solution

The fourth proportional to 114,712.38, 158,297.70 and 63,728.40 is: 87,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,712.38 : 158,297.70 = 63,728.40 : x
  2. Step 2: Convert to fraction form
    114,712.38/158,297.70 = 63,728.40/x
  3. Step 3: Cross multiply
    114,712.38x = 158,297.70 × 63,728.40
  4. Step 4: Simplify right side
    114,712.38x = 10,088,059,144.68
  5. Step 5: Solve for x
    x = 10,088,059,144.68/114,712.38
  6. Step 6: Final answer
    x = 87,942.20

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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.