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Finding the Fourth Proportional to 117,978.84, 162,811.02 and 70,233.84

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Solution

The fourth proportional to 117,978.84, 162,811.02 and 70,233.84 is: 96,922.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,978.84 : 162,811.02 = 70,233.84 : x
  2. Step 2: Convert to fraction form
    117,978.84/162,811.02 = 70,233.84/x
  3. Step 3: Cross multiply
    117,978.84x = 162,811.02 × 70,233.84
  4. Step 4: Simplify right side
    117,978.84x = 11,434,843,128.92
  5. Step 5: Solve for x
    x = 11,434,843,128.92/117,978.84
  6. Step 6: Final answer
    x = 96,922.83

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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.