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Finding the Fourth Proportional to 245,122.66, 367,684.26 and 76,643.86

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Solution

The fourth proportional to 245,122.66, 367,684.26 and 76,643.86 is: 114,965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,122.66 : 367,684.26 = 76,643.86 : x
  2. Step 2: Convert to fraction form
    245,122.66/367,684.26 = 76,643.86/x
  3. Step 3: Cross multiply
    245,122.66x = 367,684.26 × 76,643.86
  4. Step 4: Simplify right side
    245,122.66x = 28,180,740,947.64
  5. Step 5: Solve for x
    x = 28,180,740,947.64/245,122.66
  6. Step 6: Final answer
    x = 114,965.87

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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.