Finding the Fourth Proportional to 102,816.81, 153,718.16 and 87,195.96
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Solution
The fourth proportional to 102,816.81, 153,718.16 and 87,195.96 is: 130,363.92
Step by Step Solution
- Step 1: Write the proportion equation
102,816.81 : 153,718.16 = 87,195.96 : x - Step 2: Convert to fraction form
102,816.81/153,718.16 = 87,195.96/x - Step 3: Cross multiply
102,816.81x = 153,718.16 × 87,195.96 - Step 4: Simplify right side
102,816.81x = 13,403,602,094.65 - Step 5: Solve for x
x = 13,403,602,094.65/102,816.81 - Step 6: Final answer
x = 130,363.92
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.