Finding the Fourth Proportional to 158,271.18, 218,435.02 and 90,272.56
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Solution
The fourth proportional to 158,271.18, 218,435.02 and 90,272.56 is: 124,587.99
Step by Step Solution
- Step 1: Write the proportion equation
158,271.18 : 218,435.02 = 90,272.56 : x - Step 2: Convert to fraction form
158,271.18/218,435.02 = 90,272.56/x - Step 3: Cross multiply
158,271.18x = 218,435.02 × 90,272.56 - Step 4: Simplify right side
158,271.18x = 19,718,688,449.05 - Step 5: Solve for x
x = 19,718,688,449.05/158,271.18 - Step 6: Final answer
x = 124,587.99
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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.