Finding the Fourth Proportional to 130,803.66, 180,514.98 and 77,090.94
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Solution
The fourth proportional to 130,803.66, 180,514.98 and 77,090.94 is: 106,388.99
Step by Step Solution
- Step 1: Write the proportion equation
130,803.66 : 180,514.98 = 77,090.94 : x - Step 2: Convert to fraction form
130,803.66/180,514.98 = 77,090.94/x - Step 3: Cross multiply
130,803.66x = 180,514.98 × 77,090.94 - Step 4: Simplify right side
130,803.66x = 13,916,069,492.28 - Step 5: Solve for x
x = 13,916,069,492.28/130,803.66 - Step 6: Final answer
x = 106,388.99
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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.