Finding the Fourth Proportional to 143,955.36, 215,958.56 and 69,210.99
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Solution
The fourth proportional to 143,955.36, 215,958.56 and 69,210.99 is: 103,828.75
Step by Step Solution
- Step 1: Write the proportion equation
143,955.36 : 215,958.56 = 69,210.99 : x - Step 2: Convert to fraction form
143,955.36/215,958.56 = 69,210.99/x - Step 3: Cross multiply
143,955.36x = 215,958.56 × 69,210.99 - Step 4: Simplify right side
143,955.36x = 14,946,705,390.52 - Step 5: Solve for x
x = 14,946,705,390.52/143,955.36 - Step 6: Final answer
x = 103,828.75
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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.