Home / 112,125.31-154,770.41-66,817.51

Finding the Fourth Proportional to 112,125.31, 154,770.41 and 66,817.51

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Solution

The fourth proportional to 112,125.31, 154,770.41 and 66,817.51 is: 92,230.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,125.31 : 154,770.41 = 66,817.51 : x
  2. Step 2: Convert to fraction form
    112,125.31/154,770.41 = 66,817.51/x
  3. Step 3: Cross multiply
    112,125.31x = 154,770.41 × 66,817.51
  4. Step 4: Simplify right side
    112,125.31x = 10,341,372,309.94
  5. Step 5: Solve for x
    x = 10,341,372,309.94/112,125.31
  6. Step 6: Final answer
    x = 92,230.49

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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.