Home / 138,204.23-190,626.39-84,515.66

Finding the Fourth Proportional to 138,204.23, 190,626.39 and 84,515.66

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Solution

The fourth proportional to 138,204.23, 190,626.39 and 84,515.66 is: 116,573.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,204.23 : 190,626.39 = 84,515.66 : x
  2. Step 2: Convert to fraction form
    138,204.23/190,626.39 = 84,515.66/x
  3. Step 3: Cross multiply
    138,204.23x = 190,626.39 × 84,515.66
  4. Step 4: Simplify right side
    138,204.23x = 16,110,914,898.99
  5. Step 5: Solve for x
    x = 16,110,914,898.99/138,204.23
  6. Step 6: Final answer
    x = 116,573.24

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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.