Home / 90,645.36-125,104.16-65,235.84

Finding the Fourth Proportional to 90,645.36, 125,104.16 and 65,235.84

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Solution

The fourth proportional to 90,645.36, 125,104.16 and 65,235.84 is: 90,035.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,645.36 : 125,104.16 = 65,235.84 : x
  2. Step 2: Convert to fraction form
    90,645.36/125,104.16 = 65,235.84/x
  3. Step 3: Cross multiply
    90,645.36x = 125,104.16 × 65,235.84
  4. Step 4: Simplify right side
    90,645.36x = 8,161,274,965.09
  5. Step 5: Solve for x
    x = 8,161,274,965.09/90,645.36
  6. Step 6: Final answer
    x = 90,035.22

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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.