Finding the Fourth Proportional to 125,821,431.61, 173,544,132.55 and 83,984,403.09
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Solution
The fourth proportional to 125,821,431.61, 173,544,132.55 and 83,984,403.09 is: 115,838,774.01
Step by Step Solution
- Step 1: Write the proportion equation
125,821,431.61 : 173,544,132.55 = 83,984,403.09 : x - Step 2: Convert to fraction form
125,821,431.61/173,544,132.55 = 83,984,403.09/x - Step 3: Cross multiply
125,821,431.61x = 173,544,132.55 × 83,984,403.09 - Step 4: Simplify right side
125,821,431.61x = 14,575,000,381,983,592 - Step 5: Solve for x
x = 14,575,000,381,983,592/125,821,431.61 - Step 6: Final answer
x = 115,838,774.01
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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.