Finding the Fourth Proportional to 154,384.19, 213,053.99 and 86,400.62
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Solution
The fourth proportional to 154,384.19, 213,053.99 and 86,400.62 is: 119,234.99
Step by Step Solution
- Step 1: Write the proportion equation
154,384.19 : 213,053.99 = 86,400.62 : x - Step 2: Convert to fraction form
154,384.19/213,053.99 = 86,400.62/x - Step 3: Cross multiply
154,384.19x = 213,053.99 × 86,400.62 - Step 4: Simplify right side
154,384.19x = 18,407,996,829.47 - Step 5: Solve for x
x = 18,407,996,829.47/154,384.19 - Step 6: Final answer
x = 119,234.99
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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.