Finding the Fourth Proportional to 157,653.84, 217,561.50 and 86,037.96
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Solution
The fourth proportional to 157,653.84, 217,561.50 and 86,037.96 is: 118,731.95
Step by Step Solution
- Step 1: Write the proportion equation
157,653.84 : 217,561.50 = 86,037.96 : x - Step 2: Convert to fraction form
157,653.84/217,561.50 = 86,037.96/x - Step 3: Cross multiply
157,653.84x = 217,561.50 × 86,037.96 - Step 4: Simplify right side
157,653.84x = 18,718,547,634.54 - Step 5: Solve for x
x = 18,718,547,634.54/157,653.84 - Step 6: Final answer
x = 118,731.95
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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.