Finding the Fourth Proportional to 159,426,400.80, 239,139,601.20 and 120,879,213.60
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Solution
The fourth proportional to 159,426,400.80, 239,139,601.20 and 120,879,213.60 is: 181,318,820.40
Step by Step Solution
- Step 1: Write the proportion equation
159,426,400.80 : 239,139,601.20 = 120,879,213.60 : x - Step 2: Convert to fraction form
159,426,400.80/239,139,601.20 = 120,879,213.60/x - Step 3: Cross multiply
159,426,400.80x = 239,139,601.20 × 120,879,213.60 - Step 4: Simplify right side
159,426,400.80x = 28,907,006,933,673,612 - Step 5: Solve for x
x = 28,907,006,933,673,612/159,426,400.80 - Step 6: Final answer
x = 181,318,820.40
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1.5x scale
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.