Home / 136,629.80-203,586.47-121,724.18

Finding the Fourth Proportional to 136,629.80, 203,586.47 and 121,724.18

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Solution

The fourth proportional to 136,629.80, 203,586.47 and 121,724.18 is: 181,376.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,629.80 : 203,586.47 = 121,724.18 : x
  2. Step 2: Convert to fraction form
    136,629.80/203,586.47 = 121,724.18/x
  3. Step 3: Cross multiply
    136,629.80x = 203,586.47 × 121,724.18
  4. Step 4: Simplify right side
    136,629.80x = 24,781,395,406.22
  5. Step 5: Solve for x
    x = 24,781,395,406.22/136,629.80
  6. Step 6: Final answer
    x = 181,376.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.