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Finding the Fourth Proportional to 122,605.68, 183,810.74 and 112,764.72

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Solution

The fourth proportional to 122,605.68, 183,810.74 and 112,764.72 is: 169,057.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,605.68 : 183,810.74 = 112,764.72 : x
  2. Step 2: Convert to fraction form
    122,605.68/183,810.74 = 112,764.72/x
  3. Step 3: Cross multiply
    122,605.68x = 183,810.74 × 112,764.72
  4. Step 4: Simplify right side
    122,605.68x = 20,727,366,629.09
  5. Step 5: Solve for x
    x = 20,727,366,629.09/122,605.68
  6. Step 6: Final answer
    x = 169,057.15

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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.