Finding the Fourth Proportional to 145,994.63, 201,472.79 and 78,926.63
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Solution
The fourth proportional to 145,994.63, 201,472.79 and 78,926.63 is: 108,918.85
Step by Step Solution
- Step 1: Write the proportion equation
145,994.63 : 201,472.79 = 78,926.63 : x - Step 2: Convert to fraction form
145,994.63/201,472.79 = 78,926.63/x - Step 3: Cross multiply
145,994.63x = 201,472.79 × 78,926.63 - Step 4: Simplify right side
145,994.63x = 15,901,566,949.40 - Step 5: Solve for x
x = 15,901,566,949.40/145,994.63 - Step 6: Final answer
x = 108,918.85
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1.5x scale
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.