Finding the Fourth Proportional to 99,805,576.21, 149,085,980.39 and 73,948,379.90
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Solution
The fourth proportional to 99,805,576.21, 149,085,980.39 and 73,948,379.90 is: 110,461,430.45
Step by Step Solution
- Step 1: Write the proportion equation
99,805,576.21 : 149,085,980.39 = 73,948,379.90 : x - Step 2: Convert to fraction form
99,805,576.21/149,085,980.39 = 73,948,379.90/x - Step 3: Cross multiply
99,805,576.21x = 149,085,980.39 × 73,948,379.90 - Step 4: Simplify right side
99,805,576.21x = 11,024,666,715,083,112 - Step 5: Solve for x
x = 11,024,666,715,083,112/99,805,576.21 - Step 6: Final answer
x = 110,461,430.45
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.