Finding the Fourth Proportional to 155,052,516.75, 213,977,037.32 and 85,442,381.65
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Solution
The fourth proportional to 155,052,516.75, 213,977,037.32 and 85,442,381.65 is: 117,913,001.80
Step by Step Solution
- Step 1: Write the proportion equation
155,052,516.75 : 213,977,037.32 = 85,442,381.65 : x - Step 2: Convert to fraction form
155,052,516.75/213,977,037.32 = 85,442,381.65/x - Step 3: Cross multiply
155,052,516.75x = 213,977,037.32 × 85,442,381.65 - Step 4: Simplify right side
155,052,516.75x = 18,282,707,687,031,732 - Step 5: Solve for x
x = 18,282,707,687,031,732/155,052,516.75 - Step 6: Final answer
x = 117,913,001.80
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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.