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Finding the Fourth Proportional to 140,774.68, 211,182.59 and 40,921.89

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Solution

The fourth proportional to 140,774.68, 211,182.59 and 40,921.89 is: 61,388.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,774.68 : 211,182.59 = 40,921.89 : x
  2. Step 2: Convert to fraction form
    140,774.68/211,182.59 = 40,921.89/x
  3. Step 3: Cross multiply
    140,774.68x = 211,182.59 × 40,921.89
  4. Step 4: Simplify right side
    140,774.68x = 8,641,990,820.20
  5. Step 5: Solve for x
    x = 8,641,990,820.20/140,774.68
  6. Step 6: Final answer
    x = 61,388.82

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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.