Finding the Fourth Proportional to 128,747,795.02, 177,666,548.79 and 72,996,965.98
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Solution
The fourth proportional to 128,747,795.02, 177,666,548.79 and 72,996,965.98 is: 100,732,746.65
Step by Step Solution
- Step 1: Write the proportion equation
128,747,795.02 : 177,666,548.79 = 72,996,965.98 : x - Step 2: Convert to fraction form
128,747,795.02/177,666,548.79 = 72,996,965.98/x - Step 3: Cross multiply
128,747,795.02x = 177,666,548.79 × 72,996,965.98 - Step 4: Simplify right side
128,747,795.02x = 12,969,119,017,807,640 - Step 5: Solve for x
x = 12,969,119,017,807,640/128,747,795.02 - Step 6: Final answer
x = 100,732,746.65
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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.