Finding the Fourth Proportional to 112,994,115.21, 155,948,897.57 and 68,966,698.77
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Solution
The fourth proportional to 112,994,115.21, 155,948,897.57 and 68,966,698.77 is: 95,184,431.70
Step by Step Solution
- Step 1: Write the proportion equation
112,994,115.21 : 155,948,897.57 = 68,966,698.77 : x - Step 2: Convert to fraction form
112,994,115.21/155,948,897.57 = 68,966,698.77/x - Step 3: Cross multiply
112,994,115.21x = 155,948,897.57 × 68,966,698.77 - Step 4: Simplify right side
112,994,115.21x = 10,755,280,641,878,940 - Step 5: Solve for x
x = 10,755,280,641,878,940/112,994,115.21 - Step 6: Final answer
x = 95,184,431.70
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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.