Finding the Fourth Proportional to 138,455.98, 208,117.49 and 91,373.63
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Solution
The fourth proportional to 138,455.98, 208,117.49 and 91,373.63 is: 137,346.55
Step by Step Solution
- Step 1: Write the proportion equation
138,455.98 : 208,117.49 = 91,373.63 : x - Step 2: Convert to fraction form
138,455.98/208,117.49 = 91,373.63/x - Step 3: Cross multiply
138,455.98x = 208,117.49 × 91,373.63 - Step 4: Simplify right side
138,455.98x = 19,016,450,070.92 - Step 5: Solve for x
x = 19,016,450,070.92/138,455.98 - Step 6: Final answer
x = 137,346.55
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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.