Finding the Fourth Proportional to 158,879,843.51, 219,256,805.95 and 87,355,747.06
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Solution
The fourth proportional to 158,879,843.51, 219,256,805.95 and 87,355,747.06 is: 120,552,372.53
Step by Step Solution
- Step 1: Write the proportion equation
158,879,843.51 : 219,256,805.95 = 87,355,747.06 : x - Step 2: Convert to fraction form
158,879,843.51/219,256,805.95 = 87,355,747.06/x - Step 3: Cross multiply
158,879,843.51x = 219,256,805.95 × 87,355,747.06 - Step 4: Simplify right side
158,879,843.51x = 19,153,342,080,985,172 - Step 5: Solve for x
x = 19,153,342,080,985,172/158,879,843.51 - Step 6: Final answer
x = 120,552,372.53
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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.