Home / 90,770.28-125,323.86-81,180.36

Finding the Fourth Proportional to 90,770.28, 125,323.86 and 81,180.36

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Solution

The fourth proportional to 90,770.28, 125,323.86 and 81,180.36 is: 112,083.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,770.28 : 125,323.86 = 81,180.36 : x
  2. Step 2: Convert to fraction form
    90,770.28/125,323.86 = 81,180.36/x
  3. Step 3: Cross multiply
    90,770.28x = 125,323.86 × 81,180.36
  4. Step 4: Simplify right side
    90,770.28x = 10,173,836,071.39
  5. Step 5: Solve for x
    x = 10,173,836,071.39/90,770.28
  6. Step 6: Final answer
    x = 112,083.34

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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.