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Finding the Fourth Proportional to 111,994.68, 154,567.26 and 64,238.70

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Solution

The fourth proportional to 111,994.68, 154,567.26 and 64,238.70 is: 88,657.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,994.68 : 154,567.26 = 64,238.70 : x
  2. Step 2: Convert to fraction form
    111,994.68/154,567.26 = 64,238.70/x
  3. Step 3: Cross multiply
    111,994.68x = 154,567.26 × 64,238.70
  4. Step 4: Simplify right side
    111,994.68x = 9,929,199,844.96
  5. Step 5: Solve for x
    x = 9,929,199,844.96/111,994.68
  6. Step 6: Final answer
    x = 88,657.78

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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.