Finding the Fourth Proportional to 128,747,794.02, 177,666,547.41 and 72,996,964.98
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Solution
The fourth proportional to 128,747,794.02, 177,666,547.41 and 72,996,964.98 is: 100,732,745.27
Step by Step Solution
- Step 1: Write the proportion equation
128,747,794.02 : 177,666,547.41 = 72,996,964.98 : x - Step 2: Convert to fraction form
128,747,794.02/177,666,547.41 = 72,996,964.98/x - Step 3: Cross multiply
128,747,794.02x = 177,666,547.41 × 72,996,964.98 - Step 4: Simplify right side
128,747,794.02x = 12,969,118,739,405,280 - Step 5: Solve for x
x = 12,969,118,739,405,280/128,747,794.02 - Step 6: Final answer
x = 100,732,745.27
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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.