Finding the Fourth Proportional to 124,720,911.44, 172,029,456.84 and 81,319,634
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Solution
The fourth proportional to 124,720,911.44, 172,029,456.84 and 81,319,634 is: 112,165,412.41
Step by Step Solution
- Step 1: Write the proportion equation
124,720,911.44 : 172,029,456.84 = 81,319,634 : x - Step 2: Convert to fraction form
124,720,911.44/172,029,456.84 = 81,319,634/x - Step 3: Cross multiply
124,720,911.44x = 172,029,456.84 × 81,319,634 - Step 4: Simplify right side
124,720,911.44x = 13,989,372,467,447,596 - Step 5: Solve for x
x = 13,989,372,467,447,596/124,720,911.44 - Step 6: Final answer
x = 112,165,412.41
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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.