Finding the Fourth Proportional to 117,434.19, 175,929.84 and 91,009.74
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Solution
The fourth proportional to 117,434.19, 175,929.84 and 91,009.74 is: 136,342.99
Step by Step Solution
- Step 1: Write the proportion equation
117,434.19 : 175,929.84 = 91,009.74 : x - Step 2: Convert to fraction form
117,434.19/175,929.84 = 91,009.74/x - Step 3: Cross multiply
117,434.19x = 175,929.84 × 91,009.74 - Step 4: Simplify right side
117,434.19x = 16,011,328,996.64 - Step 5: Solve for x
x = 16,011,328,996.64/117,434.19 - Step 6: Final answer
x = 136,342.99
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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.