Finding the Fourth Proportional to 156,134,826.21, 215,467,343.55 and 86,521,369.62
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Solution
The fourth proportional to 156,134,826.21, 215,467,343.55 and 86,521,369.62 is: 119,400,201.25
Step by Step Solution
- Step 1: Write the proportion equation
156,134,826.21 : 215,467,343.55 = 86,521,369.62 : x - Step 2: Convert to fraction form
156,134,826.21/215,467,343.55 = 86,521,369.62/x - Step 3: Cross multiply
156,134,826.21x = 215,467,343.55 × 86,521,369.62 - Step 4: Simplify right side
156,134,826.21x = 18,642,529,672,329,076 - Step 5: Solve for x
x = 18,642,529,672,329,076/156,134,826.21 - Step 6: Final answer
x = 119,400,201.25
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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.