Home / 120,738.26-181,089.95-40,761.72

Finding the Fourth Proportional to 120,738.26, 181,089.95 and 40,761.72

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Solution

The fourth proportional to 120,738.26, 181,089.95 and 40,761.72 is: 61,136.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,738.26 : 181,089.95 = 40,761.72 : x
  2. Step 2: Convert to fraction form
    120,738.26/181,089.95 = 40,761.72/x
  3. Step 3: Cross multiply
    120,738.26x = 181,089.95 × 40,761.72
  4. Step 4: Simplify right side
    120,738.26x = 7,381,537,632.91
  5. Step 5: Solve for x
    x = 7,381,537,632.91/120,738.26
  6. Step 6: Final answer
    x = 61,136.69

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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.