Home / 120,379,802.16-180,263,167.38-79,314,743.61

Finding the Fourth Proportional to 120,379,802.16, 180,263,167.38 and 79,314,743.61

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Solution

The fourth proportional to 120,379,802.16, 180,263,167.38 and 79,314,743.61 is: 118,770,147.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,379,802.16 : 180,263,167.38 = 79,314,743.61 : x
  2. Step 2: Convert to fraction form
    120,379,802.16/180,263,167.38 = 79,314,743.61/x
  3. Step 3: Cross multiply
    120,379,802.16x = 180,263,167.38 × 79,314,743.61
  4. Step 4: Simplify right side
    120,379,802.16x = 14,297,526,903,071,214
  5. Step 5: Solve for x
    x = 14,297,526,903,071,214/120,379,802.16
  6. Step 6: Final answer
    x = 118,770,147.87

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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.