Home / 112,310.80-154,970.60-66,364.05

Finding the Fourth Proportional to 112,310.80, 154,970.60 and 66,364.05

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Solution

The fourth proportional to 112,310.80, 154,970.60 and 66,364.05 is: 91,571.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,310.80 : 154,970.60 = 66,364.05 : x
  2. Step 2: Convert to fraction form
    112,310.80/154,970.60 = 66,364.05/x
  3. Step 3: Cross multiply
    112,310.80x = 154,970.60 × 66,364.05
  4. Step 4: Simplify right side
    112,310.80x = 10,284,476,148.63
  5. Step 5: Solve for x
    x = 10,284,476,148.63/112,310.80
  6. Step 6: Final answer
    x = 91,571.57

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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.