Finding the Fourth Proportional to 121,319.70, 181,979.55 and 62,135.70
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Solution
The fourth proportional to 121,319.70, 181,979.55 and 62,135.70 is: 93,203.55
Step by Step Solution
- Step 1: Write the proportion equation
121,319.70 : 181,979.55 = 62,135.70 : x - Step 2: Convert to fraction form
121,319.70/181,979.55 = 62,135.70/x - Step 3: Cross multiply
121,319.70x = 181,979.55 × 62,135.70 - Step 4: Simplify right side
121,319.70x = 11,307,426,724.94 - Step 5: Solve for x
x = 11,307,426,724.94/121,319.70 - Step 6: Final answer
x = 93,203.55
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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.