Finding the Fourth Proportional to 128,967,136.98, 193,414,795.47 and 42,712,269.54
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Solution
The fourth proportional to 128,967,136.98, 193,414,795.47 and 42,712,269.54 is: 64,056,511.38
Step by Step Solution
- Step 1: Write the proportion equation
128,967,136.98 : 193,414,795.47 = 42,712,269.54 : x - Step 2: Convert to fraction form
128,967,136.98/193,414,795.47 = 42,712,269.54/x - Step 3: Cross multiply
128,967,136.98x = 193,414,795.47 × 42,712,269.54 - Step 4: Simplify right side
128,967,136.98x = 8,261,184,877,138,611 - Step 5: Solve for x
x = 8,261,184,877,138,611/128,967,136.98 - Step 6: Final answer
x = 64,056,511.38
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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.