Finding the Fourth Proportional to 191,344.70, 286,830.95 and 91,478.99
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Solution
The fourth proportional to 191,344.70, 286,830.95 and 91,478.99 is: 137,129.51
Step by Step Solution
- Step 1: Write the proportion equation
191,344.70 : 286,830.95 = 91,478.99 : x - Step 2: Convert to fraction form
191,344.70/286,830.95 = 91,478.99/x - Step 3: Cross multiply
191,344.70x = 286,830.95 × 91,478.99 - Step 4: Simplify right side
191,344.70x = 26,239,003,715.19 - Step 5: Solve for x
x = 26,239,003,715.19/191,344.70 - Step 6: Final answer
x = 137,129.51
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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.