Home / 141,864.20-212,796.30-128,961.80

Finding the Fourth Proportional to 141,864.20, 212,796.30 and 128,961.80

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Solution

The fourth proportional to 141,864.20, 212,796.30 and 128,961.80 is: 193,442.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,864.20 : 212,796.30 = 128,961.80 : x
  2. Step 2: Convert to fraction form
    141,864.20/212,796.30 = 128,961.80/x
  3. Step 3: Cross multiply
    141,864.20x = 212,796.30 × 128,961.80
  4. Step 4: Simplify right side
    141,864.20x = 27,442,593,881.34
  5. Step 5: Solve for x
    x = 27,442,593,881.34/141,864.20
  6. Step 6: Final answer
    x = 193,442.70

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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.