Home / 103,266.06-154,596.54-78,403.50

Finding the Fourth Proportional to 103,266.06, 154,596.54 and 78,403.50

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Solution

The fourth proportional to 103,266.06, 154,596.54 and 78,403.50 is: 117,375.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,266.06 : 154,596.54 = 78,403.50 : x
  2. Step 2: Convert to fraction form
    103,266.06/154,596.54 = 78,403.50/x
  3. Step 3: Cross multiply
    103,266.06x = 154,596.54 × 78,403.50
  4. Step 4: Simplify right side
    103,266.06x = 12,120,909,823.89
  5. Step 5: Solve for x
    x = 12,120,909,823.89/103,266.06
  6. Step 6: Final answer
    x = 117,375.54

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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.