Home / 140,147.72-193,405.19-76,485.50

Finding the Fourth Proportional to 140,147.72, 193,405.19 and 76,485.50

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Solution

The fourth proportional to 140,147.72, 193,405.19 and 76,485.50 is: 105,550.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,147.72 : 193,405.19 = 76,485.50 : x
  2. Step 2: Convert to fraction form
    140,147.72/193,405.19 = 76,485.50/x
  3. Step 3: Cross multiply
    140,147.72x = 193,405.19 × 76,485.50
  4. Step 4: Simplify right side
    140,147.72x = 14,792,692,035.56
  5. Step 5: Solve for x
    x = 14,792,692,035.56/140,147.72
  6. Step 6: Final answer
    x = 105,550.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.