Home / 137,532.06-189,856.41-86,619.61

Finding the Fourth Proportional to 137,532.06, 189,856.41 and 86,619.61

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Solution

The fourth proportional to 137,532.06, 189,856.41 and 86,619.61 is: 119,574.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,532.06 : 189,856.41 = 86,619.61 : x
  2. Step 2: Convert to fraction form
    137,532.06/189,856.41 = 86,619.61/x
  3. Step 3: Cross multiply
    137,532.06x = 189,856.41 × 86,619.61
  4. Step 4: Simplify right side
    137,532.06x = 16,445,288,190.20
  5. Step 5: Solve for x
    x = 16,445,288,190.20/137,532.06
  6. Step 6: Final answer
    x = 119,574.22

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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.