Home / 239,870.75-331,050.80-139,268.75

Finding the Fourth Proportional to 239,870.75, 331,050.80 and 139,268.75

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Solution

The fourth proportional to 239,870.75, 331,050.80 and 139,268.75 is: 192,207.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,870.75 : 331,050.80 = 139,268.75 : x
  2. Step 2: Convert to fraction form
    239,870.75/331,050.80 = 139,268.75/x
  3. Step 3: Cross multiply
    239,870.75x = 331,050.80 × 139,268.75
  4. Step 4: Simplify right side
    239,870.75x = 46,105,030,406.16
  5. Step 5: Solve for x
    x = 46,105,030,406.16/239,870.75
  6. Step 6: Final answer
    x = 192,207.81

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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.