Home / 117,930.81-162,742.19-64,216.47

Finding the Fourth Proportional to 117,930.81, 162,742.19 and 64,216.47

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Solution

The fourth proportional to 117,930.81, 162,742.19 and 64,216.47 is: 88,617.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,930.81 : 162,742.19 = 64,216.47 : x
  2. Step 2: Convert to fraction form
    117,930.81/162,742.19 = 64,216.47/x
  3. Step 3: Cross multiply
    117,930.81x = 162,742.19 × 64,216.47
  4. Step 4: Simplify right side
    117,930.81x = 10,450,728,640.79
  5. Step 5: Solve for x
    x = 10,450,728,640.79/117,930.81
  6. Step 6: Final answer
    x = 88,617.46

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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.