Home / 306,112.12-459,172.05-81,471.19

Finding the Fourth Proportional to 306,112.12, 459,172.05 and 81,471.19

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Solution

The fourth proportional to 306,112.12, 459,172.05 and 81,471.19 is: 122,207.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,112.12 : 459,172.05 = 81,471.19 : x
  2. Step 2: Convert to fraction form
    306,112.12/459,172.05 = 81,471.19/x
  3. Step 3: Cross multiply
    306,112.12x = 459,172.05 × 81,471.19
  4. Step 4: Simplify right side
    306,112.12x = 37,409,293,328.24
  5. Step 5: Solve for x
    x = 37,409,293,328.24/306,112.12
  6. Step 6: Final answer
    x = 122,207.81

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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.