Home / 140,731.40-211,024.20-51,939.20

Finding the Fourth Proportional to 140,731.40, 211,024.20 and 51,939.20

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Solution

The fourth proportional to 140,731.40, 211,024.20 and 51,939.20 is: 77,881.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,731.40 : 211,024.20 = 51,939.20 : x
  2. Step 2: Convert to fraction form
    140,731.40/211,024.20 = 51,939.20/x
  3. Step 3: Cross multiply
    140,731.40x = 211,024.20 × 51,939.20
  4. Step 4: Simplify right side
    140,731.40x = 10,960,428,128.64
  5. Step 5: Solve for x
    x = 10,960,428,128.64/140,731.40
  6. Step 6: Final answer
    x = 77,881.90

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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.