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Finding the Fourth Proportional to 140,967.65, 211,475.15 and 69,893.79

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Solution

The fourth proportional to 140,967.65, 211,475.15 and 69,893.79 is: 104,852.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,967.65 : 211,475.15 = 69,893.79 : x
  2. Step 2: Convert to fraction form
    140,967.65/211,475.15 = 69,893.79/x
  3. Step 3: Cross multiply
    140,967.65x = 211,475.15 × 69,893.79
  4. Step 4: Simplify right side
    140,967.65x = 14,780,799,374.85
  5. Step 5: Solve for x
    x = 14,780,799,374.85/140,967.65
  6. Step 6: Final answer
    x = 104,852.42

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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.