Home / 131,014.56-180,778.32-74,405.28

Finding the Fourth Proportional to 131,014.56, 180,778.32 and 74,405.28

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Solution

The fourth proportional to 131,014.56, 180,778.32 and 74,405.28 is: 102,666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,014.56 : 180,778.32 = 74,405.28 : x
  2. Step 2: Convert to fraction form
    131,014.56/180,778.32 = 74,405.28/x
  3. Step 3: Cross multiply
    131,014.56x = 180,778.32 × 74,405.28
  4. Step 4: Simplify right side
    131,014.56x = 13,450,861,517.53
  5. Step 5: Solve for x
    x = 13,450,861,517.53/131,014.56
  6. Step 6: Final answer
    x = 102,666.92

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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.