Home / 120,763.90-181,145.31-102,827.53

Finding the Fourth Proportional to 120,763.90, 181,145.31 and 102,827.53

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Solution

The fourth proportional to 120,763.90, 181,145.31 and 102,827.53 is: 154,240.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,763.90 : 181,145.31 = 102,827.53 : x
  2. Step 2: Convert to fraction form
    120,763.90/181,145.31 = 102,827.53/x
  3. Step 3: Cross multiply
    120,763.90x = 181,145.31 × 102,827.53
  4. Step 4: Simplify right side
    120,763.90x = 18,626,724,798.38
  5. Step 5: Solve for x
    x = 18,626,724,798.38/120,763.90
  6. Step 6: Final answer
    x = 154,240.84

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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.