Finding the Fourth Proportional to 207,916.60, 286,928.65 and 121,937.60
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Solution
The fourth proportional to 207,916.60, 286,928.65 and 121,937.60 is: 168,276.07
Step by Step Solution
- Step 1: Write the proportion equation
207,916.60 : 286,928.65 = 121,937.60 : x - Step 2: Convert to fraction form
207,916.60/286,928.65 = 121,937.60/x - Step 3: Cross multiply
207,916.60x = 286,928.65 × 121,937.60 - Step 4: Simplify right side
207,916.60x = 34,987,389,500.98 - Step 5: Solve for x
x = 34,987,389,500.98/207,916.60 - Step 6: Final answer
x = 168,276.07
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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.