Home / 111,511.71-153,816.17-66,157.59

Finding the Fourth Proportional to 111,511.71, 153,816.17 and 66,157.59

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Solution

The fourth proportional to 111,511.71, 153,816.17 and 66,157.59 is: 91,255.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,511.71 : 153,816.17 = 66,157.59 : x
  2. Step 2: Convert to fraction form
    111,511.71/153,816.17 = 66,157.59/x
  3. Step 3: Cross multiply
    111,511.71x = 153,816.17 × 66,157.59
  4. Step 4: Simplify right side
    111,511.71x = 10,176,107,110.23
  5. Step 5: Solve for x
    x = 10,176,107,110.23/111,511.71
  6. Step 6: Final answer
    x = 91,255.95

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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.