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Finding the Fourth Proportional to 168,020.64, 251,937.80 and 66,715.96

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Solution

The fourth proportional to 168,020.64, 251,937.80 and 66,715.96 is: 100,036.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,020.64 : 251,937.80 = 66,715.96 : x
  2. Step 2: Convert to fraction form
    168,020.64/251,937.80 = 66,715.96/x
  3. Step 3: Cross multiply
    168,020.64x = 251,937.80 × 66,715.96
  4. Step 4: Simplify right side
    168,020.64x = 16,808,272,187.29
  5. Step 5: Solve for x
    x = 16,808,272,187.29/168,020.64
  6. Step 6: Final answer
    x = 100,036.95

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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.