Home / 111,303.36-153,576-65,961.39

Finding the Fourth Proportional to 111,303.36, 153,576 and 65,961.39

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Solution

The fourth proportional to 111,303.36, 153,576 and 65,961.39 is: 91,013.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,303.36 : 153,576 = 65,961.39 : x
  2. Step 2: Convert to fraction form
    111,303.36/153,576 = 65,961.39/x
  3. Step 3: Cross multiply
    111,303.36x = 153,576 × 65,961.39
  4. Step 4: Simplify right side
    111,303.36x = 10,130,086,430.64
  5. Step 5: Solve for x
    x = 10,130,086,430.64/111,303.36
  6. Step 6: Final answer
    x = 91,013.30

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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.