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Finding the Fourth Proportional to 122,811.44, 169,478.59 and 68,362.74

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Solution

The fourth proportional to 122,811.44, 169,478.59 and 68,362.74 is: 94,339.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,811.44 : 169,478.59 = 68,362.74 : x
  2. Step 2: Convert to fraction form
    122,811.44/169,478.59 = 68,362.74/x
  3. Step 3: Cross multiply
    122,811.44x = 169,478.59 × 68,362.74
  4. Step 4: Simplify right side
    122,811.44x = 11,586,021,248.37
  5. Step 5: Solve for x
    x = 11,586,021,248.37/122,811.44
  6. Step 6: Final answer
    x = 94,339.92

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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.