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Finding the Fourth Proportional to 141,315.10, 211,644.60 and 138,034.60

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Solution

The fourth proportional to 141,315.10, 211,644.60 and 138,034.60 is: 206,731.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,315.10 : 211,644.60 = 138,034.60 : x
  2. Step 2: Convert to fraction form
    141,315.10/211,644.60 = 138,034.60/x
  3. Step 3: Cross multiply
    141,315.10x = 211,644.60 × 138,034.60
  4. Step 4: Simplify right side
    141,315.10x = 29,214,277,703.16
  5. Step 5: Solve for x
    x = 29,214,277,703.16/141,315.10
  6. Step 6: Final answer
    x = 206,731.47

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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.