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Finding the Fourth Proportional to 141,201.20, 211,801.80 and 121,518.20

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Solution

The fourth proportional to 141,201.20, 211,801.80 and 121,518.20 is: 182,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,201.20 : 211,801.80 = 121,518.20 : x
  2. Step 2: Convert to fraction form
    141,201.20/211,801.80 = 121,518.20/x
  3. Step 3: Cross multiply
    141,201.20x = 211,801.80 × 121,518.20
  4. Step 4: Simplify right side
    141,201.20x = 25,737,773,492.76
  5. Step 5: Solve for x
    x = 25,737,773,492.76/141,201.20
  6. Step 6: Final answer
    x = 182,277.30

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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.