Home / 117,145.71-161,660.37-63,429.60

Finding the Fourth Proportional to 117,145.71, 161,660.37 and 63,429.60

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Solution

The fourth proportional to 117,145.71, 161,660.37 and 63,429.60 is: 87,532.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,145.71 : 161,660.37 = 63,429.60 : x
  2. Step 2: Convert to fraction form
    117,145.71/161,660.37 = 63,429.60/x
  3. Step 3: Cross multiply
    117,145.71x = 161,660.37 × 63,429.60
  4. Step 4: Simplify right side
    117,145.71x = 10,254,052,604.95
  5. Step 5: Solve for x
    x = 10,254,052,604.95/117,145.71
  6. Step 6: Final answer
    x = 87,532.46

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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.