Finding the Fourth Proportional to 105,605.46, 158,030.73 and 91,728.99
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Solution
The fourth proportional to 105,605.46, 158,030.73 and 91,728.99 is: 137,265.62
Step by Step Solution
- Step 1: Write the proportion equation
105,605.46 : 158,030.73 = 91,728.99 : x - Step 2: Convert to fraction form
105,605.46/158,030.73 = 91,728.99/x - Step 3: Cross multiply
105,605.46x = 158,030.73 × 91,728.99 - Step 4: Simplify right side
105,605.46x = 14,495,999,251.86 - Step 5: Solve for x
x = 14,495,999,251.86/105,605.46 - Step 6: Final answer
x = 137,265.62
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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.