Home / 111,431.58-153,751.92-66,124.30

Finding the Fourth Proportional to 111,431.58, 153,751.92 and 66,124.30

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Solution

The fourth proportional to 111,431.58, 153,751.92 and 66,124.30 is: 91,237.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,431.58 : 153,751.92 = 66,124.30 : x
  2. Step 2: Convert to fraction form
    111,431.58/153,751.92 = 66,124.30/x
  3. Step 3: Cross multiply
    111,431.58x = 153,751.92 × 66,124.30
  4. Step 4: Simplify right side
    111,431.58x = 10,166,738,083.66
  5. Step 5: Solve for x
    x = 10,166,738,083.66/111,431.58
  6. Step 6: Final answer
    x = 91,237.49

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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.