Finding the Fourth Proportional to 157,946.70, 217,966.44 and 86,326.68
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Solution
The fourth proportional to 157,946.70, 217,966.44 and 86,326.68 is: 119,130.82
Step by Step Solution
- Step 1: Write the proportion equation
157,946.70 : 217,966.44 = 86,326.68 : x - Step 2: Convert to fraction form
157,946.70/217,966.44 = 86,326.68/x - Step 3: Cross multiply
157,946.70x = 217,966.44 × 86,326.68 - Step 4: Simplify right side
157,946.70x = 18,816,319,116.62 - Step 5: Solve for x
x = 18,816,319,116.62/157,946.70 - Step 6: Final answer
x = 119,130.82
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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.