Finding the Fourth Proportional to 158,133.17, 218,228.95 and 86,511.53
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Solution
The fourth proportional to 158,133.17, 218,228.95 and 86,511.53 is: 119,388.75
Step by Step Solution
- Step 1: Write the proportion equation
158,133.17 : 218,228.95 = 86,511.53 : x - Step 2: Convert to fraction form
158,133.17/218,228.95 = 86,511.53/x - Step 3: Cross multiply
158,133.17x = 218,228.95 × 86,511.53 - Step 4: Simplify right side
158,133.17x = 18,879,321,008.51 - Step 5: Solve for x
x = 18,879,321,008.51/158,133.17 - Step 6: Final answer
x = 119,388.75
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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.