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Finding the Fourth Proportional to 140,597.90, 210,890.70 and 40,755.92

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Solution

The fourth proportional to 140,597.90, 210,890.70 and 40,755.92 is: 61,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,597.90 : 210,890.70 = 40,755.92 : x
  2. Step 2: Convert to fraction form
    140,597.90/210,890.70 = 40,755.92/x
  3. Step 3: Cross multiply
    140,597.90x = 210,890.70 × 40,755.92
  4. Step 4: Simplify right side
    140,597.90x = 8,595,044,497.94
  5. Step 5: Solve for x
    x = 8,595,044,497.94/140,597.90
  6. Step 6: Final answer
    x = 61,132.10

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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.