Finding the Fourth Proportional to 112,890.49, 155,796.08 and 74,582.83
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Solution
The fourth proportional to 112,890.49, 155,796.08 and 74,582.83 is: 102,929.07
Step by Step Solution
- Step 1: Write the proportion equation
112,890.49 : 155,796.08 = 74,582.83 : x - Step 2: Convert to fraction form
112,890.49/155,796.08 = 74,582.83/x - Step 3: Cross multiply
112,890.49x = 155,796.08 × 74,582.83 - Step 4: Simplify right side
112,890.49x = 11,619,712,809.31 - Step 5: Solve for x
x = 11,619,712,809.31/112,890.49 - Step 6: Final answer
x = 102,929.07
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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.