Finding the Fourth Proportional to 156,481,844.84, 215,934,109.44 and 86,861,742.20
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Solution
The fourth proportional to 156,481,844.84, 215,934,109.44 and 86,861,742.20 is: 119,863,189.02
Step by Step Solution
- Step 1: Write the proportion equation
156,481,844.84 : 215,934,109.44 = 86,861,742.20 : x - Step 2: Convert to fraction form
156,481,844.84/215,934,109.44 = 86,861,742.20/x - Step 3: Cross multiply
156,481,844.84x = 215,934,109.44 × 86,861,742.20 - Step 4: Simplify right side
156,481,844.84x = 18,756,412,946,363,868 - Step 5: Solve for x
x = 18,756,412,946,363,868/156,481,844.84 - Step 6: Final answer
x = 119,863,189.02
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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.