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Finding the Fourth Proportional to 117,228.76, 161,775.78 and 68,821.22

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Solution

The fourth proportional to 117,228.76, 161,775.78 and 68,821.22 is: 94,973.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,228.76 : 161,775.78 = 68,821.22 : x
  2. Step 2: Convert to fraction form
    117,228.76/161,775.78 = 68,821.22/x
  3. Step 3: Cross multiply
    117,228.76x = 161,775.78 × 68,821.22
  4. Step 4: Simplify right side
    117,228.76x = 11,133,606,546.05
  5. Step 5: Solve for x
    x = 11,133,606,546.05/117,228.76
  6. Step 6: Final answer
    x = 94,973.34

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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.