Home / 145,190.25-200,362.56-81,528.09

Finding the Fourth Proportional to 145,190.25, 200,362.56 and 81,528.09

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Solution

The fourth proportional to 145,190.25, 200,362.56 and 81,528.09 is: 112,508.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,190.25 : 200,362.56 = 81,528.09 : x
  2. Step 2: Convert to fraction form
    145,190.25/200,362.56 = 81,528.09/x
  3. Step 3: Cross multiply
    145,190.25x = 200,362.56 × 81,528.09
  4. Step 4: Simplify right side
    145,190.25x = 16,335,176,824.31
  5. Step 5: Solve for x
    x = 16,335,176,824.31/145,190.25
  6. Step 6: Final answer
    x = 112,508.77

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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.