Home / 117,121.36-161,628.31-63,406.51

Finding the Fourth Proportional to 117,121.36, 161,628.31 and 63,406.51

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Solution

The fourth proportional to 117,121.36, 161,628.31 and 63,406.51 is: 87,501.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,121.36 : 161,628.31 = 63,406.51 : x
  2. Step 2: Convert to fraction form
    117,121.36/161,628.31 = 63,406.51/x
  3. Step 3: Cross multiply
    117,121.36x = 161,628.31 × 63,406.51
  4. Step 4: Simplify right side
    117,121.36x = 10,248,287,638.64
  5. Step 5: Solve for x
    x = 10,248,287,638.64/117,121.36
  6. Step 6: Final answer
    x = 87,501.44

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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.