Home / 138,568.28-191,096.70-90,804.28

Finding the Fourth Proportional to 138,568.28, 191,096.70 and 90,804.28

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Solution

The fourth proportional to 138,568.28, 191,096.70 and 90,804.28 is: 125,226.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,568.28 : 191,096.70 = 90,804.28 : x
  2. Step 2: Convert to fraction form
    138,568.28/191,096.70 = 90,804.28/x
  3. Step 3: Cross multiply
    138,568.28x = 191,096.70 × 90,804.28
  4. Step 4: Simplify right side
    138,568.28x = 17,352,398,253.88
  5. Step 5: Solve for x
    x = 17,352,398,253.88/138,568.28
  6. Step 6: Final answer
    x = 125,226.34

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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.