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Finding the Fourth Proportional to 140,640.98, 210,928.66 and 40,774.37

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Solution

The fourth proportional to 140,640.98, 210,928.66 and 40,774.37 is: 61,152.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,640.98 : 210,928.66 = 40,774.37 : x
  2. Step 2: Convert to fraction form
    140,640.98/210,928.66 = 40,774.37/x
  3. Step 3: Cross multiply
    140,640.98x = 210,928.66 × 40,774.37
  4. Step 4: Simplify right side
    140,640.98x = 8,600,483,651.83
  5. Step 5: Solve for x
    x = 8,600,483,651.83/140,640.98
  6. Step 6: Final answer
    x = 61,152.04

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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.