Home / 111,569.78-153,944.63-66,261.96

Finding the Fourth Proportional to 111,569.78, 153,944.63 and 66,261.96

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Solution

The fourth proportional to 111,569.78, 153,944.63 and 66,261.96 is: 91,428.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,569.78 : 153,944.63 = 66,261.96 : x
  2. Step 2: Convert to fraction form
    111,569.78/153,944.63 = 66,261.96/x
  3. Step 3: Cross multiply
    111,569.78x = 153,944.63 × 66,261.96
  4. Step 4: Simplify right side
    111,569.78x = 10,200,672,583.97
  5. Step 5: Solve for x
    x = 10,200,672,583.97/111,569.78
  6. Step 6: Final answer
    x = 91,428.64

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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.