Finding the Fourth Proportional to 153,294,836.63, 211,549,105.47 and 87,213,912.65
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Solution
The fourth proportional to 153,294,836.63, 211,549,105.47 and 87,213,912.65 is: 120,356,468.70
Step by Step Solution
- Step 1: Write the proportion equation
153,294,836.63 : 211,549,105.47 = 87,213,912.65 : x - Step 2: Convert to fraction form
153,294,836.63/211,549,105.47 = 87,213,912.65/x - Step 3: Cross multiply
153,294,836.63x = 211,549,105.47 × 87,213,912.65 - Step 4: Simplify right side
153,294,836.63x = 18,450,025,205,708,836 - Step 5: Solve for x
x = 18,450,025,205,708,836/153,294,836.63 - Step 6: Final answer
x = 120,356,468.70
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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.