Home / 120,686.72-181,042.40-41,800.80

Finding the Fourth Proportional to 120,686.72, 181,042.40 and 41,800.80

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Solution

The fourth proportional to 120,686.72, 181,042.40 and 41,800.80 is: 62,705.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,686.72 : 181,042.40 = 41,800.80 : x
  2. Step 2: Convert to fraction form
    120,686.72/181,042.40 = 41,800.80/x
  3. Step 3: Cross multiply
    120,686.72x = 181,042.40 × 41,800.80
  4. Step 4: Simplify right side
    120,686.72x = 7,567,717,153.92
  5. Step 5: Solve for x
    x = 7,567,717,153.92/120,686.72
  6. Step 6: Final answer
    x = 62,705.47

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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.