Home / 145,640.12-200,983.39-85,222.36

Finding the Fourth Proportional to 145,640.12, 200,983.39 and 85,222.36

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Solution

The fourth proportional to 145,640.12, 200,983.39 and 85,222.36 is: 117,606.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,640.12 : 200,983.39 = 85,222.36 : x
  2. Step 2: Convert to fraction form
    145,640.12/200,983.39 = 85,222.36/x
  3. Step 3: Cross multiply
    145,640.12x = 200,983.39 × 85,222.36
  4. Step 4: Simplify right side
    145,640.12x = 17,128,278,854.77
  5. Step 5: Solve for x
    x = 17,128,278,854.77/145,640.12
  6. Step 6: Final answer
    x = 117,606.88

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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.