Home / 138,491.61-190,991.55-90,771.27

Finding the Fourth Proportional to 138,491.61, 190,991.55 and 90,771.27

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Solution

The fourth proportional to 138,491.61, 190,991.55 and 90,771.27 is: 125,181.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,491.61 : 190,991.55 = 90,771.27 : x
  2. Step 2: Convert to fraction form
    138,491.61/190,991.55 = 90,771.27/x
  3. Step 3: Cross multiply
    138,491.61x = 190,991.55 × 90,771.27
  4. Step 4: Simplify right side
    138,491.61x = 17,336,545,176.94
  5. Step 5: Solve for x
    x = 17,336,545,176.94/138,491.61
  6. Step 6: Final answer
    x = 125,181.20

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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.