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Finding the Fourth Proportional to 122,186.80, 168,619.98 and 68,471.56

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Solution

The fourth proportional to 122,186.80, 168,619.98 and 68,471.56 is: 94,491.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,186.80 : 168,619.98 = 68,471.56 : x
  2. Step 2: Convert to fraction form
    122,186.80/168,619.98 = 68,471.56/x
  3. Step 3: Cross multiply
    122,186.80x = 168,619.98 × 68,471.56
  4. Step 4: Simplify right side
    122,186.80x = 11,545,673,077.77
  5. Step 5: Solve for x
    x = 11,545,673,077.77/122,186.80
  6. Step 6: Final answer
    x = 94,491.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.