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Finding the Fourth Proportional to 111,713.64, 154,160.58 and 63,971.46

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Solution

The fourth proportional to 111,713.64, 154,160.58 and 63,971.46 is: 88,278.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,713.64 : 154,160.58 = 63,971.46 : x
  2. Step 2: Convert to fraction form
    111,713.64/154,160.58 = 63,971.46/x
  3. Step 3: Cross multiply
    111,713.64x = 154,160.58 × 63,971.46
  4. Step 4: Simplify right side
    111,713.64x = 9,861,877,377.05
  5. Step 5: Solve for x
    x = 9,861,877,377.05/111,713.64
  6. Step 6: Final answer
    x = 88,278.18

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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.