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Finding the Fourth Proportional to 141,204.40, 211,806.60 and 71,220.40

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Solution

The fourth proportional to 141,204.40, 211,806.60 and 71,220.40 is: 106,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,204.40 : 211,806.60 = 71,220.40 : x
  2. Step 2: Convert to fraction form
    141,204.40/211,806.60 = 71,220.40/x
  3. Step 3: Cross multiply
    141,204.40x = 211,806.60 × 71,220.40
  4. Step 4: Simplify right side
    141,204.40x = 15,084,950,774.64
  5. Step 5: Solve for x
    x = 15,084,950,774.64/141,204.40
  6. Step 6: Final answer
    x = 106,830.60

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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.