Finding the Fourth Proportional to 140,529,179.98, 193,930,239.99 and 78,649,511.86
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Solution
The fourth proportional to 140,529,179.98, 193,930,239.99 and 78,649,511.86 is: 108,536,310.48
Step by Step Solution
- Step 1: Write the proportion equation
140,529,179.98 : 193,930,239.99 = 78,649,511.86 : x - Step 2: Convert to fraction form
140,529,179.98/193,930,239.99 = 78,649,511.86/x - Step 3: Cross multiply
140,529,179.98x = 193,930,239.99 × 78,649,511.86 - Step 4: Simplify right side
140,529,179.98x = 15,252,518,710,106,152 - Step 5: Solve for x
x = 15,252,518,710,106,152/140,529,179.98 - Step 6: Final answer
x = 108,536,310.48
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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.