Home / 116,245.40-174,145.80-78,620.60

Finding the Fourth Proportional to 116,245.40, 174,145.80 and 78,620.60

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Solution

The fourth proportional to 116,245.40, 174,145.80 and 78,620.60 is: 117,780.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,245.40 : 174,145.80 = 78,620.60 : x
  2. Step 2: Convert to fraction form
    116,245.40/174,145.80 = 78,620.60/x
  3. Step 3: Cross multiply
    116,245.40x = 174,145.80 × 78,620.60
  4. Step 4: Simplify right side
    116,245.40x = 13,691,447,283.48
  5. Step 5: Solve for x
    x = 13,691,447,283.48/116,245.40
  6. Step 6: Final answer
    x = 117,780.55

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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.