Home / 138,058.36-190,426.87-89,573.66

Finding the Fourth Proportional to 138,058.36, 190,426.87 and 89,573.66

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Solution

The fourth proportional to 138,058.36, 190,426.87 and 89,573.66 is: 123,550.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,058.36 : 190,426.87 = 89,573.66 : x
  2. Step 2: Convert to fraction form
    138,058.36/190,426.87 = 89,573.66/x
  3. Step 3: Cross multiply
    138,058.36x = 190,426.87 × 89,573.66
  4. Step 4: Simplify right side
    138,058.36x = 17,057,231,708.24
  5. Step 5: Solve for x
    x = 17,057,231,708.24/138,058.36
  6. Step 6: Final answer
    x = 123,550.88

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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.