Home / 112,283.44-168,513.15-78,328.60

Finding the Fourth Proportional to 112,283.44, 168,513.15 and 78,328.60

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Solution

The fourth proportional to 112,283.44, 168,513.15 and 78,328.60 is: 117,554.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,283.44 : 168,513.15 = 78,328.60 : x
  2. Step 2: Convert to fraction form
    112,283.44/168,513.15 = 78,328.60/x
  3. Step 3: Cross multiply
    112,283.44x = 168,513.15 × 78,328.60
  4. Step 4: Simplify right side
    112,283.44x = 13,199,399,121.09
  5. Step 5: Solve for x
    x = 13,199,399,121.09/112,283.44
  6. Step 6: Final answer
    x = 117,554.28

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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.