Finding the Fourth Proportional to 128,118,210.90, 192,177,316.35 and 126,923,817.30
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Solution
The fourth proportional to 128,118,210.90, 192,177,316.35 and 126,923,817.30 is: 190,385,725.95
Step by Step Solution
- Step 1: Write the proportion equation
128,118,210.90 : 192,177,316.35 = 126,923,817.30 : x - Step 2: Convert to fraction form
128,118,210.90/192,177,316.35 = 126,923,817.30/x - Step 3: Cross multiply
128,118,210.90x = 192,177,316.35 × 126,923,817.30 - Step 4: Simplify right side
128,118,210.90x = 24,391,878,589,611,700 - Step 5: Solve for x
x = 24,391,878,589,611,700/128,118,210.90 - Step 6: Final answer
x = 190,385,725.95
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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.