Home / 100,051.07-138,105.20-57,626.51

Finding the Fourth Proportional to 100,051.07, 138,105.20 and 57,626.51

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Solution

The fourth proportional to 100,051.07, 138,105.20 and 57,626.51 is: 79,544.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,051.07 : 138,105.20 = 57,626.51 : x
  2. Step 2: Convert to fraction form
    100,051.07/138,105.20 = 57,626.51/x
  3. Step 3: Cross multiply
    100,051.07x = 138,105.20 × 57,626.51
  4. Step 4: Simplify right side
    100,051.07x = 7,958,520,142.39
  5. Step 5: Solve for x
    x = 7,958,520,142.39/100,051.07
  6. Step 6: Final answer
    x = 79,544.58

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1.5x scale

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.