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Finding the Fourth Proportional to 117,139.54, 161,652.32 and 63,424.60

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Solution

The fourth proportional to 117,139.54, 161,652.32 and 63,424.60 is: 87,525.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,139.54 : 161,652.32 = 63,424.60 : x
  2. Step 2: Convert to fraction form
    117,139.54/161,652.32 = 63,424.60/x
  3. Step 3: Cross multiply
    117,139.54x = 161,652.32 × 63,424.60
  4. Step 4: Simplify right side
    117,139.54x = 10,252,733,735.07
  5. Step 5: Solve for x
    x = 10,252,733,735.07/117,139.54
  6. Step 6: Final answer
    x = 87,525.82

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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.