Home / 228,172.09-342,185.36-78,376.26

Finding the Fourth Proportional to 228,172.09, 342,185.36 and 78,376.26

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Solution

The fourth proportional to 228,172.09, 342,185.36 and 78,376.26 is: 117,539.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,172.09 : 342,185.36 = 78,376.26 : x
  2. Step 2: Convert to fraction form
    228,172.09/342,185.36 = 78,376.26/x
  3. Step 3: Cross multiply
    228,172.09x = 342,185.36 × 78,376.26
  4. Step 4: Simplify right side
    228,172.09x = 26,819,208,743.55
  5. Step 5: Solve for x
    x = 26,819,208,743.55/228,172.09
  6. Step 6: Final answer
    x = 117,539.39

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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.