Home / 111,345.85-153,650.75-66,028.17

Finding the Fourth Proportional to 111,345.85, 153,650.75 and 66,028.17

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Solution

The fourth proportional to 111,345.85, 153,650.75 and 66,028.17 is: 91,115.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,345.85 : 153,650.75 = 66,028.17 : x
  2. Step 2: Convert to fraction form
    111,345.85/153,650.75 = 66,028.17/x
  3. Step 3: Cross multiply
    111,345.85x = 153,650.75 × 66,028.17
  4. Step 4: Simplify right side
    111,345.85x = 10,145,277,511.49
  5. Step 5: Solve for x
    x = 10,145,277,511.49/111,345.85
  6. Step 6: Final answer
    x = 91,115.01

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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.