Finding the Fourth Proportional to 129,323,267.70, 193,984,901.55 and 115,293,225.30
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Solution
The fourth proportional to 129,323,267.70, 193,984,901.55 and 115,293,225.30 is: 172,939,837.95
Step by Step Solution
- Step 1: Write the proportion equation
129,323,267.70 : 193,984,901.55 = 115,293,225.30 : x - Step 2: Convert to fraction form
129,323,267.70/193,984,901.55 = 115,293,225.30/x - Step 3: Cross multiply
129,323,267.70x = 193,984,901.55 × 115,293,225.30 - Step 4: Simplify right side
129,323,267.70x = 22,365,144,959,202,472 - Step 5: Solve for x
x = 22,365,144,959,202,472/129,323,267.70 - Step 6: Final answer
x = 172,939,837.95
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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.