Home / 120,725.16-181,017.53-80,789.79

Finding the Fourth Proportional to 120,725.16, 181,017.53 and 80,789.79

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Solution

The fourth proportional to 120,725.16, 181,017.53 and 80,789.79 is: 121,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,725.16 : 181,017.53 = 80,789.79 : x
  2. Step 2: Convert to fraction form
    120,725.16/181,017.53 = 80,789.79/x
  3. Step 3: Cross multiply
    120,725.16x = 181,017.53 × 80,789.79
  4. Step 4: Simplify right side
    120,725.16x = 14,624,368,235.02
  5. Step 5: Solve for x
    x = 14,624,368,235.02/120,725.16
  6. Step 6: Final answer
    x = 121,137.70

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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.