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Finding the Fourth Proportional to 168,389.70, 252,619.65 and 56,104.80

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Solution

The fourth proportional to 168,389.70, 252,619.65 and 56,104.80 is: 84,168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,389.70 : 252,619.65 = 56,104.80 : x
  2. Step 2: Convert to fraction form
    168,389.70/252,619.65 = 56,104.80/x
  3. Step 3: Cross multiply
    168,389.70x = 252,619.65 × 56,104.80
  4. Step 4: Simplify right side
    168,389.70x = 14,173,174,939.32
  5. Step 5: Solve for x
    x = 14,173,174,939.32/168,389.70
  6. Step 6: Final answer
    x = 84,168.89

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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.