Finding the Fourth Proportional to 147,141.90, 203,053.92 and 86,715.09
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Solution
The fourth proportional to 147,141.90, 203,053.92 and 86,715.09 is: 119,665.70
Step by Step Solution
- Step 1: Write the proportion equation
147,141.90 : 203,053.92 = 86,715.09 : x - Step 2: Convert to fraction form
147,141.90/203,053.92 = 86,715.09/x - Step 3: Cross multiply
147,141.90x = 203,053.92 × 86,715.09 - Step 4: Simplify right side
147,141.90x = 17,607,838,947.65 - Step 5: Solve for x
x = 17,607,838,947.65/147,141.90 - Step 6: Final answer
x = 119,665.70
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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.