Home / 100,735.62-139,015.48-55,417.05

Finding the Fourth Proportional to 100,735.62, 139,015.48 and 55,417.05

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Solution

The fourth proportional to 100,735.62, 139,015.48 and 55,417.05 is: 76,475.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,735.62 : 139,015.48 = 55,417.05 : x
  2. Step 2: Convert to fraction form
    100,735.62/139,015.48 = 55,417.05/x
  3. Step 3: Cross multiply
    100,735.62x = 139,015.48 × 55,417.05
  4. Step 4: Simplify right side
    100,735.62x = 7,703,828,318.14
  5. Step 5: Solve for x
    x = 7,703,828,318.14/100,735.62
  6. Step 6: Final answer
    x = 76,475.71

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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.