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Finding the Fourth Proportional to 140,261.62, 210,523.65 and 69,264.42

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Solution

The fourth proportional to 140,261.62, 210,523.65 and 69,264.42 is: 103,961.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,261.62 : 210,523.65 = 69,264.42 : x
  2. Step 2: Convert to fraction form
    140,261.62/210,523.65 = 69,264.42/x
  3. Step 3: Cross multiply
    140,261.62x = 210,523.65 × 69,264.42
  4. Step 4: Simplify right side
    140,261.62x = 14,581,798,513.53
  5. Step 5: Solve for x
    x = 14,581,798,513.53/140,261.62
  6. Step 6: Final answer
    x = 103,961.43

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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.