Finding the Fourth Proportional to 158,368.91, 218,552.62 and 90,384.53
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Solution
The fourth proportional to 158,368.91, 218,552.62 and 90,384.53 is: 124,732.66
Step by Step Solution
- Step 1: Write the proportion equation
158,368.91 : 218,552.62 = 90,384.53 : x - Step 2: Convert to fraction form
158,368.91/218,552.62 = 90,384.53/x - Step 3: Cross multiply
158,368.91x = 218,552.62 × 90,384.53 - Step 4: Simplify right side
158,368.91x = 19,753,775,387.05 - Step 5: Solve for x
x = 19,753,775,387.05/158,368.91 - Step 6: Final answer
x = 124,732.66
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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.