Home / 100,434.42-138,594.81-55,111.26

Finding the Fourth Proportional to 100,434.42, 138,594.81 and 55,111.26

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Solution

The fourth proportional to 100,434.42, 138,594.81 and 55,111.26 is: 76,050.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,434.42 : 138,594.81 = 55,111.26 : x
  2. Step 2: Convert to fraction form
    100,434.42/138,594.81 = 55,111.26/x
  3. Step 3: Cross multiply
    100,434.42x = 138,594.81 × 55,111.26
  4. Step 4: Simplify right side
    100,434.42x = 7,638,134,608.56
  5. Step 5: Solve for x
    x = 7,638,134,608.56/100,434.42
  6. Step 6: Final answer
    x = 76,050.97

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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.