Home / 142,300.80-213,451.20-53,574.21

Finding the Fourth Proportional to 142,300.80, 213,451.20 and 53,574.21

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Solution

The fourth proportional to 142,300.80, 213,451.20 and 53,574.21 is: 80,361.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,300.80 : 213,451.20 = 53,574.21 : x
  2. Step 2: Convert to fraction form
    142,300.80/213,451.20 = 53,574.21/x
  3. Step 3: Cross multiply
    142,300.80x = 213,451.20 × 53,574.21
  4. Step 4: Simplify right side
    142,300.80x = 11,435,479,413.55
  5. Step 5: Solve for x
    x = 11,435,479,413.55/142,300.80
  6. Step 6: Final answer
    x = 80,361.32

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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.