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Finding the Fourth Proportional to 78,119.58, 117,198.81 and 22,715.58

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Solution

The fourth proportional to 78,119.58, 117,198.81 and 22,715.58 is: 34,079.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,119.58 : 117,198.81 = 22,715.58 : x
  2. Step 2: Convert to fraction form
    78,119.58/117,198.81 = 22,715.58/x
  3. Step 3: Cross multiply
    78,119.58x = 117,198.81 × 22,715.58
  4. Step 4: Simplify right side
    78,119.58x = 2,662,238,944.46
  5. Step 5: Solve for x
    x = 2,662,238,944.46/78,119.58
  6. Step 6: Final answer
    x = 34,079.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.