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Finding the Fourth Proportional to 117,122.36, 161,629.69 and 63,407.51

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Solution

The fourth proportional to 117,122.36, 161,629.69 and 63,407.51 is: 87,502.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,122.36 : 161,629.69 = 63,407.51 : x
  2. Step 2: Convert to fraction form
    117,122.36/161,629.69 = 63,407.51/x
  3. Step 3: Cross multiply
    117,122.36x = 161,629.69 × 63,407.51
  4. Step 4: Simplify right side
    117,122.36x = 10,248,536,184.97
  5. Step 5: Solve for x
    x = 10,248,536,184.97/117,122.36
  6. Step 6: Final answer
    x = 87,502.81

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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.