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Finding the Fourth Proportional to 115,701.98, 159,669.90 and 67,956.12

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Solution

The fourth proportional to 115,701.98, 159,669.90 and 67,956.12 is: 93,780.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,701.98 : 159,669.90 = 67,956.12 : x
  2. Step 2: Convert to fraction form
    115,701.98/159,669.90 = 67,956.12/x
  3. Step 3: Cross multiply
    115,701.98x = 159,669.90 × 67,956.12
  4. Step 4: Simplify right side
    115,701.98x = 10,850,546,884.79
  5. Step 5: Solve for x
    x = 10,850,546,884.79/115,701.98
  6. Step 6: Final answer
    x = 93,780.14

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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.