Finding the Fourth Proportional to 131,772.16, 181,929.36 and 86,530.42
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Solution
The fourth proportional to 131,772.16, 181,929.36 and 86,530.42 is: 119,466.99
Step by Step Solution
- Step 1: Write the proportion equation
131,772.16 : 181,929.36 = 86,530.42 : x - Step 2: Convert to fraction form
131,772.16/181,929.36 = 86,530.42/x - Step 3: Cross multiply
131,772.16x = 181,929.36 × 86,530.42 - Step 4: Simplify right side
131,772.16x = 15,742,423,931.13 - Step 5: Solve for x
x = 15,742,423,931.13/131,772.16 - Step 6: Final answer
x = 119,466.99
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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.