Finding the Fourth Proportional to 157,403,485.42, 217,217,099.73 and 87,793,353.07
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Solution
The fourth proportional to 157,403,485.42, 217,217,099.73 and 87,793,353.07 is: 121,154,988.90
Step by Step Solution
- Step 1: Write the proportion equation
157,403,485.42 : 217,217,099.73 = 87,793,353.07 : x - Step 2: Convert to fraction form
157,403,485.42/217,217,099.73 = 87,793,353.07/x - Step 3: Cross multiply
157,403,485.42x = 217,217,099.73 × 87,793,353.07 - Step 4: Simplify right side
157,403,485.42x = 19,070,217,529,437,288 - Step 5: Solve for x
x = 19,070,217,529,437,288/157,403,485.42 - Step 6: Final answer
x = 121,154,988.90
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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.