Home / 118,820.22-163,971.81-65,108.58

Finding the Fourth Proportional to 118,820.22, 163,971.81 and 65,108.58

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Solution

The fourth proportional to 118,820.22, 163,971.81 and 65,108.58 is: 89,849.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,820.22 : 163,971.81 = 65,108.58 : x
  2. Step 2: Convert to fraction form
    118,820.22/163,971.81 = 65,108.58/x
  3. Step 3: Cross multiply
    118,820.22x = 163,971.81 × 65,108.58
  4. Step 4: Simplify right side
    118,820.22x = 10,675,971,709.13
  5. Step 5: Solve for x
    x = 10,675,971,709.13/118,820.22
  6. Step 6: Final answer
    x = 89,849.79

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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.