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Finding the Fourth Proportional to 141,959.82, 212,859.88 and 47,139.26

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Solution

The fourth proportional to 141,959.82, 212,859.88 and 47,139.26 is: 70,682.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,959.82 : 212,859.88 = 47,139.26 : x
  2. Step 2: Convert to fraction form
    141,959.82/212,859.88 = 47,139.26/x
  3. Step 3: Cross multiply
    141,959.82x = 212,859.88 × 47,139.26
  4. Step 4: Simplify right side
    141,959.82x = 10,034,056,812.59
  5. Step 5: Solve for x
    x = 10,034,056,812.59/141,959.82
  6. Step 6: Final answer
    x = 70,682.37

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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.