Finding the Fourth Proportional to 128,736,053.70, 193,104,080.55 and 122,764,085.70
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Solution
The fourth proportional to 128,736,053.70, 193,104,080.55 and 122,764,085.70 is: 184,146,128.55
Step by Step Solution
- Step 1: Write the proportion equation
128,736,053.70 : 193,104,080.55 = 122,764,085.70 : x - Step 2: Convert to fraction form
128,736,053.70/193,104,080.55 = 122,764,085.70/x - Step 3: Cross multiply
128,736,053.70x = 193,104,080.55 × 122,764,085.70 - Step 4: Simplify right side
128,736,053.70x = 23,706,245,893,659,904 - Step 5: Solve for x
x = 23,706,245,893,659,904/128,736,053.70 - Step 6: Final answer
x = 184,146,128.55
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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.