Finding the Fourth Proportional to 168,068,395.80, 252,102,593.70 and 99,875,986.20
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Solution
The fourth proportional to 168,068,395.80, 252,102,593.70 and 99,875,986.20 is: 149,813,979.30
Step by Step Solution
- Step 1: Write the proportion equation
168,068,395.80 : 252,102,593.70 = 99,875,986.20 : x - Step 2: Convert to fraction form
168,068,395.80/252,102,593.70 = 99,875,986.20/x - Step 3: Cross multiply
168,068,395.80x = 252,102,593.70 × 99,875,986.20 - Step 4: Simplify right side
168,068,395.80x = 25,178,995,169,365,408 - Step 5: Solve for x
x = 25,178,995,169,365,408/168,068,395.80 - Step 6: Final answer
x = 149,813,979.30
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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.