Home / 123,831.38-170,889.43-67,242.75

Finding the Fourth Proportional to 123,831.38, 170,889.43 and 67,242.75

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Solution

The fourth proportional to 123,831.38, 170,889.43 and 67,242.75 is: 92,796.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,831.38 : 170,889.43 = 67,242.75 : x
  2. Step 2: Convert to fraction form
    123,831.38/170,889.43 = 67,242.75/x
  3. Step 3: Cross multiply
    123,831.38x = 170,889.43 × 67,242.75
  4. Step 4: Simplify right side
    123,831.38x = 11,491,075,051.03
  5. Step 5: Solve for x
    x = 11,491,075,051.03/123,831.38
  6. Step 6: Final answer
    x = 92,796.15

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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.