Home / 138,160.08-190,659.02-80,838.81

Finding the Fourth Proportional to 138,160.08, 190,659.02 and 80,838.81

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Solution

The fourth proportional to 138,160.08, 190,659.02 and 80,838.81 is: 111,556.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,160.08 : 190,659.02 = 80,838.81 : x
  2. Step 2: Convert to fraction form
    138,160.08/190,659.02 = 80,838.81/x
  3. Step 3: Cross multiply
    138,160.08x = 190,659.02 × 80,838.81
  4. Step 4: Simplify right side
    138,160.08x = 15,412,647,888.37
  5. Step 5: Solve for x
    x = 15,412,647,888.37/138,160.08
  6. Step 6: Final answer
    x = 111,556.45

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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.