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Finding the Fourth Proportional to 140,146.98, 210,286.07 and 61,250.95

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Solution

The fourth proportional to 140,146.98, 210,286.07 and 61,250.95 is: 91,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,146.98 : 210,286.07 = 61,250.95 : x
  2. Step 2: Convert to fraction form
    140,146.98/210,286.07 = 61,250.95/x
  3. Step 3: Cross multiply
    140,146.98x = 210,286.07 × 61,250.95
  4. Step 4: Simplify right side
    140,146.98x = 12,880,221,559.27
  5. Step 5: Solve for x
    x = 12,880,221,559.27/140,146.98
  6. Step 6: Final answer
    x = 91,905.10

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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.