Home / 112,775.13-169,109.71-65,403.68

Finding the Fourth Proportional to 112,775.13, 169,109.71 and 65,403.68

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Solution

The fourth proportional to 112,775.13, 169,109.71 and 65,403.68 is: 98,074.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,775.13 : 169,109.71 = 65,403.68 : x
  2. Step 2: Convert to fraction form
    112,775.13/169,109.71 = 65,403.68/x
  3. Step 3: Cross multiply
    112,775.13x = 169,109.71 × 65,403.68
  4. Step 4: Simplify right side
    112,775.13x = 11,060,396,348.68
  5. Step 5: Solve for x
    x = 11,060,396,348.68/112,775.13
  6. Step 6: Final answer
    x = 98,074.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.