Finding the Fourth Proportional to 153,425,745.12, 211,733,964.72 and 88,235,700.96
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Solution
The fourth proportional to 153,425,745.12, 211,733,964.72 and 88,235,700.96 is: 121,768,968.95
Step by Step Solution
- Step 1: Write the proportion equation
153,425,745.12 : 211,733,964.72 = 88,235,700.96 : x - Step 2: Convert to fraction form
153,425,745.12/211,733,964.72 = 88,235,700.96/x - Step 3: Cross multiply
153,425,745.12x = 211,733,964.72 × 88,235,700.96 - Step 4: Simplify right side
153,425,745.12x = 18,682,494,794,109,108 - Step 5: Solve for x
x = 18,682,494,794,109,108/153,425,745.12 - Step 6: Final answer
x = 121,768,968.95
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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.