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Finding the Fourth Proportional to 168,809.10, 253,213.65 and 84,828.30

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Solution

The fourth proportional to 168,809.10, 253,213.65 and 84,828.30 is: 127,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,809.10 : 253,213.65 = 84,828.30 : x
  2. Step 2: Convert to fraction form
    168,809.10/253,213.65 = 84,828.30/x
  3. Step 3: Cross multiply
    168,809.10x = 253,213.65 × 84,828.30
  4. Step 4: Simplify right side
    168,809.10x = 21,479,683,466.30
  5. Step 5: Solve for x
    x = 21,479,683,466.30/168,809.10
  6. Step 6: Final answer
    x = 127,242.45

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1.5x scale

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.