Home / 142,169.21-213,069.73-57,831.47

Finding the Fourth Proportional to 142,169.21, 213,069.73 and 57,831.47

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Solution

The fourth proportional to 142,169.21, 213,069.73 and 57,831.47 is: 86,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,169.21 : 213,069.73 = 57,831.47 : x
  2. Step 2: Convert to fraction form
    142,169.21/213,069.73 = 57,831.47/x
  3. Step 3: Cross multiply
    142,169.21x = 213,069.73 × 57,831.47
  4. Step 4: Simplify right side
    142,169.21x = 12,322,135,698.40
  5. Step 5: Solve for x
    x = 12,322,135,698.40/142,169.21
  6. Step 6: Final answer
    x = 86,672.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.