Home / 138,360.02-190,950.41-80,995.87

Finding the Fourth Proportional to 138,360.02, 190,950.41 and 80,995.87

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Solution

The fourth proportional to 138,360.02, 190,950.41 and 80,995.87 is: 111,782.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,360.02 : 190,950.41 = 80,995.87 : x
  2. Step 2: Convert to fraction form
    138,360.02/190,950.41 = 80,995.87/x
  3. Step 3: Cross multiply
    138,360.02x = 190,950.41 × 80,995.87
  4. Step 4: Simplify right side
    138,360.02x = 15,466,194,584.81
  5. Step 5: Solve for x
    x = 15,466,194,584.81/138,360.02
  6. Step 6: Final answer
    x = 111,782.25

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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.