Home / 118,819.85-163,971.29-65,108.21

Finding the Fourth Proportional to 118,819.85, 163,971.29 and 65,108.21

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Solution

The fourth proportional to 118,819.85, 163,971.29 and 65,108.21 is: 89,849.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,819.85 : 163,971.29 = 65,108.21 : x
  2. Step 2: Convert to fraction form
    118,819.85/163,971.29 = 65,108.21/x
  3. Step 3: Cross multiply
    118,819.85x = 163,971.29 × 65,108.21
  4. Step 4: Simplify right side
    118,819.85x = 10,675,876,526.21
  5. Step 5: Solve for x
    x = 10,675,876,526.21/118,819.85
  6. Step 6: Final answer
    x = 89,849.27

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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.