Home / 142,256.06-196,313.22-81,825.15

Finding the Fourth Proportional to 142,256.06, 196,313.22 and 81,825.15

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Solution

The fourth proportional to 142,256.06, 196,313.22 and 81,825.15 is: 112,918.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,256.06 : 196,313.22 = 81,825.15 : x
  2. Step 2: Convert to fraction form
    142,256.06/196,313.22 = 81,825.15/x
  3. Step 3: Cross multiply
    142,256.06x = 196,313.22 × 81,825.15
  4. Step 4: Simplify right side
    142,256.06x = 16,063,358,673.48
  5. Step 5: Solve for x
    x = 16,063,358,673.48/142,256.06
  6. Step 6: Final answer
    x = 112,918.62

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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.