Home / 141,912.30-212,627.56-85,634.16

Finding the Fourth Proportional to 141,912.30, 212,627.56 and 85,634.16

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Solution

The fourth proportional to 141,912.30, 212,627.56 and 85,634.16 is: 128,305.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,912.30 : 212,627.56 = 85,634.16 : x
  2. Step 2: Convert to fraction form
    141,912.30/212,627.56 = 85,634.16/x
  3. Step 3: Cross multiply
    141,912.30x = 212,627.56 × 85,634.16
  4. Step 4: Simplify right side
    141,912.30x = 18,208,182,065.28
  5. Step 5: Solve for x
    x = 18,208,182,065.28/141,912.30
  6. Step 6: Final answer
    x = 128,305.88

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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.