Home / 75,407.22-113,640.45-67,920.16

Finding the Fourth Proportional to 75,407.22, 113,640.45 and 67,920.16

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Solution

The fourth proportional to 75,407.22, 113,640.45 and 67,920.16 is: 102,357.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,407.22 : 113,640.45 = 67,920.16 : x
  2. Step 2: Convert to fraction form
    75,407.22/113,640.45 = 67,920.16/x
  3. Step 3: Cross multiply
    75,407.22x = 113,640.45 × 67,920.16
  4. Step 4: Simplify right side
    75,407.22x = 7,718,477,546.47
  5. Step 5: Solve for x
    x = 7,718,477,546.47/75,407.22
  6. Step 6: Final answer
    x = 102,357.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.