Finding the Fourth Proportional to 161,911.70, 242,867.55 and 91,927.70
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Solution
The fourth proportional to 161,911.70, 242,867.55 and 91,927.70 is: 137,891.55
Step by Step Solution
- Step 1: Write the proportion equation
161,911.70 : 242,867.55 = 91,927.70 : x - Step 2: Convert to fraction form
161,911.70/242,867.55 = 91,927.70/x - Step 3: Cross multiply
161,911.70x = 242,867.55 × 91,927.70 - Step 4: Simplify right side
161,911.70x = 22,326,255,276.14 - Step 5: Solve for x
x = 22,326,255,276.14/161,911.70 - Step 6: Final answer
x = 137,891.55
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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.