Finding the Fourth Proportional to 128,641,128.14, 177,524,621.78 and 69,903,653.53
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Solution
The fourth proportional to 128,641,128.14, 177,524,621.78 and 69,903,653.53 is: 96,466,968.48
Step by Step Solution
- Step 1: Write the proportion equation
128,641,128.14 : 177,524,621.78 = 69,903,653.53 : x - Step 2: Convert to fraction form
128,641,128.14/177,524,621.78 = 69,903,653.53/x - Step 3: Cross multiply
128,641,128.14x = 177,524,621.78 × 69,903,653.53 - Step 4: Simplify right side
128,641,128.14x = 12,409,619,653,953,412 - Step 5: Solve for x
x = 12,409,619,653,953,412/128,641,128.14 - Step 6: Final answer
x = 96,466,968.48
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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.