Finding the Fourth Proportional to 125,342,108.84, 172,972,736.34 and 78,326,483.42
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Solution
The fourth proportional to 125,342,108.84, 172,972,736.34 and 78,326,483.42 is: 108,090,938.40
Step by Step Solution
- Step 1: Write the proportion equation
125,342,108.84 : 172,972,736.34 = 78,326,483.42 : x - Step 2: Convert to fraction form
125,342,108.84/172,972,736.34 = 78,326,483.42/x - Step 3: Cross multiply
125,342,108.84x = 172,972,736.34 × 78,326,483.42 - Step 4: Simplify right side
125,342,108.84x = 13,548,346,165,047,042 - Step 5: Solve for x
x = 13,548,346,165,047,042/125,342,108.84 - Step 6: Final answer
x = 108,090,938.40
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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.