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Finding the Fourth Proportional to 140,491.80, 210,525.48 and 56,168.64

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Solution

The fourth proportional to 140,491.80, 210,525.48 and 56,168.64 is: 84,168.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,491.80 : 210,525.48 = 56,168.64 : x
  2. Step 2: Convert to fraction form
    140,491.80/210,525.48 = 56,168.64/x
  3. Step 3: Cross multiply
    140,491.80x = 210,525.48 × 56,168.64
  4. Step 4: Simplify right side
    140,491.80x = 11,824,929,896.95
  5. Step 5: Solve for x
    x = 11,824,929,896.95/140,491.80
  6. Step 6: Final answer
    x = 84,168.11

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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.