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Finding the Fourth Proportional to 140,151.61, 210,260.89 and 45,381.89

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Solution

The fourth proportional to 140,151.61, 210,260.89 and 45,381.89 is: 68,083.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,151.61 : 210,260.89 = 45,381.89 : x
  2. Step 2: Convert to fraction form
    140,151.61/210,260.89 = 45,381.89/x
  3. Step 3: Cross multiply
    140,151.61x = 210,260.89 × 45,381.89
  4. Step 4: Simplify right side
    140,151.61x = 9,542,035,942.18
  5. Step 5: Solve for x
    x = 9,542,035,942.18/140,151.61
  6. Step 6: Final answer
    x = 68,083.67

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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.