Home / 136,856.07-188,820.12-79,484.34

Finding the Fourth Proportional to 136,856.07, 188,820.12 and 79,484.34

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Solution

The fourth proportional to 136,856.07, 188,820.12 and 79,484.34 is: 109,664.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,856.07 : 188,820.12 = 79,484.34 : x
  2. Step 2: Convert to fraction form
    136,856.07/188,820.12 = 79,484.34/x
  3. Step 3: Cross multiply
    136,856.07x = 188,820.12 × 79,484.34
  4. Step 4: Simplify right side
    136,856.07x = 15,008,242,616.92
  5. Step 5: Solve for x
    x = 15,008,242,616.92/136,856.07
  6. Step 6: Final answer
    x = 109,664.43

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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.