Home / 100,626.21-138,717.83-70,317.46

Finding the Fourth Proportional to 100,626.21, 138,717.83 and 70,317.46

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Solution

The fourth proportional to 100,626.21, 138,717.83 and 70,317.46 is: 96,935.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,626.21 : 138,717.83 = 70,317.46 : x
  2. Step 2: Convert to fraction form
    100,626.21/138,717.83 = 70,317.46/x
  3. Step 3: Cross multiply
    100,626.21x = 138,717.83 × 70,317.46
  4. Step 4: Simplify right side
    100,626.21x = 9,754,284,768.72
  5. Step 5: Solve for x
    x = 9,754,284,768.72/100,626.21
  6. Step 6: Final answer
    x = 96,935.83

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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.