Finding the Fourth Proportional to 156,548,438.69, 216,039,447.27 and 85,990,572.99
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Solution
The fourth proportional to 156,548,438.69, 216,039,447.27 and 85,990,572.99 is: 118,668,419.92
Step by Step Solution
- Step 1: Write the proportion equation
156,548,438.69 : 216,039,447.27 = 85,990,572.99 : x - Step 2: Convert to fraction form
156,548,438.69/216,039,447.27 = 85,990,572.99/x - Step 3: Cross multiply
156,548,438.69x = 216,039,447.27 × 85,990,572.99 - Step 4: Simplify right side
156,548,438.69x = 18,577,355,859,190,192 - Step 5: Solve for x
x = 18,577,355,859,190,192/156,548,438.69 - Step 6: Final answer
x = 118,668,419.92
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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.