Home / 111,569.36-153,914.18-66,221.60

Finding the Fourth Proportional to 111,569.36, 153,914.18 and 66,221.60

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Solution

The fourth proportional to 111,569.36, 153,914.18 and 66,221.60 is: 91,355.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,569.36 : 153,914.18 = 66,221.60 : x
  2. Step 2: Convert to fraction form
    111,569.36/153,914.18 = 66,221.60/x
  3. Step 3: Cross multiply
    111,569.36x = 153,914.18 × 66,221.60
  4. Step 4: Simplify right side
    111,569.36x = 10,192,442,161.61
  5. Step 5: Solve for x
    x = 10,192,442,161.61/111,569.36
  6. Step 6: Final answer
    x = 91,355.21

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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.