Finding the Fourth Proportional to 159,434,725.80, 239,152,088.70 and 120,887,538.60
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Solution
The fourth proportional to 159,434,725.80, 239,152,088.70 and 120,887,538.60 is: 181,331,307.90
Step by Step Solution
- Step 1: Write the proportion equation
159,434,725.80 : 239,152,088.70 = 120,887,538.60 : x - Step 2: Convert to fraction form
159,434,725.80/239,152,088.70 = 120,887,538.60/x - Step 3: Cross multiply
159,434,725.80x = 239,152,088.70 × 120,887,538.60 - Step 4: Simplify right side
159,434,725.80x = 28,910,507,353,991,872 - Step 5: Solve for x
x = 28,910,507,353,991,872/159,434,725.80 - Step 6: Final answer
x = 181,331,307.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.