Finding the Fourth Proportional to 103,898.71, 143,313.73 and 72,055.99
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Solution
The fourth proportional to 103,898.71, 143,313.73 and 72,055.99 is: 99,391.15
Step by Step Solution
- Step 1: Write the proportion equation
103,898.71 : 143,313.73 = 72,055.99 : x - Step 2: Convert to fraction form
103,898.71/143,313.73 = 72,055.99/x - Step 3: Cross multiply
103,898.71x = 143,313.73 × 72,055.99 - Step 4: Simplify right side
103,898.71x = 10,326,612,695.74 - Step 5: Solve for x
x = 10,326,612,695.74/103,898.71 - Step 6: Final answer
x = 99,391.15
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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.