Finding the Fourth Proportional to 138,749.19, 191,314.26 and 102,503.08
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Solution
The fourth proportional to 138,749.19, 191,314.26 and 102,503.08 is: 141,336.33
Step by Step Solution
- Step 1: Write the proportion equation
138,749.19 : 191,314.26 = 102,503.08 : x - Step 2: Convert to fraction form
138,749.19/191,314.26 = 102,503.08/x - Step 3: Cross multiply
138,749.19x = 191,314.26 × 102,503.08 - Step 4: Simplify right side
138,749.19x = 19,610,300,804.02 - Step 5: Solve for x
x = 19,610,300,804.02/138,749.19 - Step 6: Final answer
x = 141,336.33
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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.