Finding the Fourth Proportional to 128,447,650.53, 177,257,757.59 and 69,710,315.65
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Solution
The fourth proportional to 128,447,650.53, 177,257,757.59 and 69,710,315.65 is: 96,200,235.52
Step by Step Solution
- Step 1: Write the proportion equation
128,447,650.53 : 177,257,757.59 = 69,710,315.65 : x - Step 2: Convert to fraction form
128,447,650.53/177,257,757.59 = 69,710,315.65/x - Step 3: Cross multiply
128,447,650.53x = 177,257,757.59 × 69,710,315.65 - Step 4: Simplify right side
128,447,650.53x = 12,356,694,232,661,534 - Step 5: Solve for x
x = 12,356,694,232,661,534/128,447,650.53 - Step 6: Final answer
x = 96,200,235.52
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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.