Home / 131,790.44-181,870.54-71,361.25

Finding the Fourth Proportional to 131,790.44, 181,870.54 and 71,361.25

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Solution

The fourth proportional to 131,790.44, 181,870.54 and 71,361.25 is: 98,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,790.44 : 181,870.54 = 71,361.25 : x
  2. Step 2: Convert to fraction form
    131,790.44/181,870.54 = 71,361.25/x
  3. Step 3: Cross multiply
    131,790.44x = 181,870.54 × 71,361.25
  4. Step 4: Simplify right side
    131,790.44x = 12,978,509,612.26
  5. Step 5: Solve for x
    x = 12,978,509,612.26/131,790.44
  6. Step 6: Final answer
    x = 98,478.39

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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.