Home / 111,424.33-153,785.22-66,127.28

Finding the Fourth Proportional to 111,424.33, 153,785.22 and 66,127.28

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Solution

The fourth proportional to 111,424.33, 153,785.22 and 66,127.28 is: 91,267.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,424.33 : 153,785.22 = 66,127.28 : x
  2. Step 2: Convert to fraction form
    111,424.33/153,785.22 = 66,127.28/x
  3. Step 3: Cross multiply
    111,424.33x = 153,785.22 × 66,127.28
  4. Step 4: Simplify right side
    111,424.33x = 10,169,398,302.80
  5. Step 5: Solve for x
    x = 10,169,398,302.80/111,424.33
  6. Step 6: Final answer
    x = 91,267.31

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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.