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Finding the Fourth Proportional to 140,145.98, 210,284.57 and 61,249.95

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Solution

The fourth proportional to 140,145.98, 210,284.57 and 61,249.95 is: 91,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,145.98 : 210,284.57 = 61,249.95 : x
  2. Step 2: Convert to fraction form
    140,145.98/210,284.57 = 61,249.95/x
  3. Step 3: Cross multiply
    140,145.98x = 210,284.57 × 61,249.95
  4. Step 4: Simplify right side
    140,145.98x = 12,879,919,551.40
  5. Step 5: Solve for x
    x = 12,879,919,551.40/140,145.98
  6. Step 6: Final answer
    x = 91,903.60

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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.