Finding the Fourth Proportional to 112,307,813.80, 168,461,720.70 and 66,958,181.80
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Solution
The fourth proportional to 112,307,813.80, 168,461,720.70 and 66,958,181.80 is: 100,437,272.70
Step by Step Solution
- Step 1: Write the proportion equation
112,307,813.80 : 168,461,720.70 = 66,958,181.80 : x - Step 2: Convert to fraction form
112,307,813.80/168,461,720.70 = 66,958,181.80/x - Step 3: Cross multiply
112,307,813.80x = 168,461,720.70 × 66,958,181.80 - Step 4: Simplify right side
112,307,813.80x = 11,279,890,520,971,422 - Step 5: Solve for x
x = 11,279,890,520,971,422/112,307,813.80 - Step 6: Final answer
x = 100,437,272.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.