Home / 103,596.21-155,378.93-28,708.55

Finding the Fourth Proportional to 103,596.21, 155,378.93 and 28,708.55

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Solution

The fourth proportional to 103,596.21, 155,378.93 and 28,708.55 is: 43,058.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,596.21 : 155,378.93 = 28,708.55 : x
  2. Step 2: Convert to fraction form
    103,596.21/155,378.93 = 28,708.55/x
  3. Step 3: Cross multiply
    103,596.21x = 155,378.93 × 28,708.55
  4. Step 4: Simplify right side
    103,596.21x = 4,460,702,968.07
  5. Step 5: Solve for x
    x = 4,460,702,968.07/103,596.21
  6. Step 6: Final answer
    x = 43,058.56

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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.