Finding the Fourth Proportional to 158,234.74, 218,363.99 and 86,616.29
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Solution
The fourth proportional to 158,234.74, 218,363.99 and 86,616.29 is: 119,530.51
Step by Step Solution
- Step 1: Write the proportion equation
158,234.74 : 218,363.99 = 86,616.29 : x - Step 2: Convert to fraction form
158,234.74/218,363.99 = 86,616.29/x - Step 3: Cross multiply
158,234.74x = 218,363.99 × 86,616.29 - Step 4: Simplify right side
158,234.74x = 18,913,878,796.23 - Step 5: Solve for x
x = 18,913,878,796.23/158,234.74 - Step 6: Final answer
x = 119,530.51
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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.