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Finding the Fourth Proportional to 143,612.46, 215,418.81 and 64,634.46

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Solution

The fourth proportional to 143,612.46, 215,418.81 and 64,634.46 is: 96,951.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,612.46 : 215,418.81 = 64,634.46 : x
  2. Step 2: Convert to fraction form
    143,612.46/215,418.81 = 64,634.46/x
  3. Step 3: Cross multiply
    143,612.46x = 215,418.81 × 64,634.46
  4. Step 4: Simplify right side
    143,612.46x = 13,923,478,458.19
  5. Step 5: Solve for x
    x = 13,923,478,458.19/143,612.46
  6. Step 6: Final answer
    x = 96,951.74

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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.