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Finding the Fourth Proportional to 140,174.85, 210,230.84 and 40,312.79

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Solution

The fourth proportional to 140,174.85, 210,230.84 and 40,312.79 is: 60,460.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,174.85 : 210,230.84 = 40,312.79 : x
  2. Step 2: Convert to fraction form
    140,174.85/210,230.84 = 40,312.79/x
  3. Step 3: Cross multiply
    140,174.85x = 210,230.84 × 40,312.79
  4. Step 4: Simplify right side
    140,174.85x = 8,474,991,542.44
  5. Step 5: Solve for x
    x = 8,474,991,542.44/140,174.85
  6. Step 6: Final answer
    x = 60,460.14

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1.5x scale

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.