Finding the Fourth Proportional to 128,641,130.52, 177,524,625.06 and 69,903,655.91
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Solution
The fourth proportional to 128,641,130.52, 177,524,625.06 and 69,903,655.91 is: 96,466,971.76
Step by Step Solution
- Step 1: Write the proportion equation
128,641,130.52 : 177,524,625.06 = 69,903,655.91 : x - Step 2: Convert to fraction form
128,641,130.52/177,524,625.06 = 69,903,655.91/x - Step 3: Cross multiply
128,641,130.52x = 177,524,625.06 × 69,903,655.91 - Step 4: Simplify right side
128,641,130.52x = 12,409,620,304,858,380 - Step 5: Solve for x
x = 12,409,620,304,858,380/128,641,130.52 - Step 6: Final answer
x = 96,466,971.76
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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.