Home / 142,121.86-213,163.35-42,297.46

Finding the Fourth Proportional to 142,121.86, 213,163.35 and 42,297.46

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Solution

The fourth proportional to 142,121.86, 213,163.35 and 42,297.46 is: 63,440.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,121.86 : 213,163.35 = 42,297.46 : x
  2. Step 2: Convert to fraction form
    142,121.86/213,163.35 = 42,297.46/x
  3. Step 3: Cross multiply
    142,121.86x = 213,163.35 × 42,297.46
  4. Step 4: Simplify right side
    142,121.86x = 9,016,268,270.09
  5. Step 5: Solve for x
    x = 9,016,268,270.09/142,121.86
  6. Step 6: Final answer
    x = 63,440.40

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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.