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Finding the Fourth Proportional to 111,702, 154,148.76 and 63,971.14

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Solution

The fourth proportional to 111,702, 154,148.76 and 63,971.14 is: 88,280.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,702 : 154,148.76 = 63,971.14 : x
  2. Step 2: Convert to fraction form
    111,702/154,148.76 = 63,971.14/x
  3. Step 3: Cross multiply
    111,702x = 154,148.76 × 63,971.14
  4. Step 4: Simplify right side
    111,702x = 9,861,071,906.79
  5. Step 5: Solve for x
    x = 9,861,071,906.79/111,702
  6. Step 6: Final answer
    x = 88,280.17

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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.