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Finding the Fourth Proportional to 140,646.97, 210,959.52 and 61,761.88

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Solution

The fourth proportional to 140,646.97, 210,959.52 and 61,761.88 is: 92,638.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,646.97 : 210,959.52 = 61,761.88 : x
  2. Step 2: Convert to fraction form
    140,646.97/210,959.52 = 61,761.88/x
  3. Step 3: Cross multiply
    140,646.97x = 210,959.52 × 61,761.88
  4. Step 4: Simplify right side
    140,646.97x = 13,029,256,559.10
  5. Step 5: Solve for x
    x = 13,029,256,559.10/140,646.97
  6. Step 6: Final answer
    x = 92,638.02

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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.