Home / 147,343.71-203,351.17-81,939.06

Finding the Fourth Proportional to 147,343.71, 203,351.17 and 81,939.06

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Solution

The fourth proportional to 147,343.71, 203,351.17 and 81,939.06 is: 113,085.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,343.71 : 203,351.17 = 81,939.06 : x
  2. Step 2: Convert to fraction form
    147,343.71/203,351.17 = 81,939.06/x
  3. Step 3: Cross multiply
    147,343.71x = 203,351.17 × 81,939.06
  4. Step 4: Simplify right side
    147,343.71x = 16,662,403,374.80
  5. Step 5: Solve for x
    x = 16,662,403,374.80/147,343.71
  6. Step 6: Final answer
    x = 113,085.27

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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.