Home / 137,568.15-189,840.10-83,833.56

Finding the Fourth Proportional to 137,568.15, 189,840.10 and 83,833.56

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Solution

The fourth proportional to 137,568.15, 189,840.10 and 83,833.56 is: 115,687.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,568.15 : 189,840.10 = 83,833.56 : x
  2. Step 2: Convert to fraction form
    137,568.15/189,840.10 = 83,833.56/x
  3. Step 3: Cross multiply
    137,568.15x = 189,840.10 × 83,833.56
  4. Step 4: Simplify right side
    137,568.15x = 15,914,971,204.17
  5. Step 5: Solve for x
    x = 15,914,971,204.17/137,568.15
  6. Step 6: Final answer
    x = 115,687.91

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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.