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Finding the Fourth Proportional to 141,427.80, 212,141.70 and 122,182.20

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Solution

The fourth proportional to 141,427.80, 212,141.70 and 122,182.20 is: 183,273.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,427.80 : 212,141.70 = 122,182.20 : x
  2. Step 2: Convert to fraction form
    141,427.80/212,141.70 = 122,182.20/x
  3. Step 3: Cross multiply
    141,427.80x = 212,141.70 × 122,182.20
  4. Step 4: Simplify right side
    141,427.80x = 25,919,939,617.74
  5. Step 5: Solve for x
    x = 25,919,939,617.74/141,427.80
  6. Step 6: Final answer
    x = 183,273.30

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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.