Home / 111,840.36-154,288.85-66,492.59

Finding the Fourth Proportional to 111,840.36, 154,288.85 and 66,492.59

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Solution

The fourth proportional to 111,840.36, 154,288.85 and 66,492.59 is: 91,729.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,840.36 : 154,288.85 = 66,492.59 : x
  2. Step 2: Convert to fraction form
    111,840.36/154,288.85 = 66,492.59/x
  3. Step 3: Cross multiply
    111,840.36x = 154,288.85 × 66,492.59
  4. Step 4: Simplify right side
    111,840.36x = 10,259,064,140.71
  5. Step 5: Solve for x
    x = 10,259,064,140.71/111,840.36
  6. Step 6: Final answer
    x = 91,729.53

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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.