Home / 111,270.21-153,553.05-65,970.39

Finding the Fourth Proportional to 111,270.21, 153,553.05 and 65,970.39

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Solution

The fourth proportional to 111,270.21, 153,553.05 and 65,970.39 is: 91,039.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,270.21 : 153,553.05 = 65,970.39 : x
  2. Step 2: Convert to fraction form
    111,270.21/153,553.05 = 65,970.39/x
  3. Step 3: Cross multiply
    111,270.21x = 153,553.05 × 65,970.39
  4. Step 4: Simplify right side
    111,270.21x = 10,129,954,594.19
  5. Step 5: Solve for x
    x = 10,129,954,594.19/111,270.21
  6. Step 6: Final answer
    x = 91,039.23

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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.