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Finding the Fourth Proportional to 120,852.84, 166,796.88 and 100,677.76

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Solution

The fourth proportional to 120,852.84, 166,796.88 and 100,677.76 is: 138,951.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,852.84 : 166,796.88 = 100,677.76 : x
  2. Step 2: Convert to fraction form
    120,852.84/166,796.88 = 100,677.76/x
  3. Step 3: Cross multiply
    120,852.84x = 166,796.88 × 100,677.76
  4. Step 4: Simplify right side
    120,852.84x = 16,792,736,253.39
  5. Step 5: Solve for x
    x = 16,792,736,253.39/120,852.84
  6. Step 6: Final answer
    x = 138,951.94

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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.