Finding the Fourth Proportional to 128,673,725.58, 177,571,539.09 and 69,936,373.08
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Solution
The fourth proportional to 128,673,725.58, 177,571,539.09 and 69,936,373.08 is: 96,513,171.98
Step by Step Solution
- Step 1: Write the proportion equation
128,673,725.58 : 177,571,539.09 = 69,936,373.08 : x - Step 2: Convert to fraction form
128,673,725.58/177,571,539.09 = 69,936,373.08/x - Step 3: Cross multiply
128,673,725.58x = 177,571,539.09 × 69,936,373.08 - Step 4: Simplify right side
128,673,725.58x = 12,418,709,406,188,044 - Step 5: Solve for x
x = 12,418,709,406,188,044/128,673,725.58 - Step 6: Final answer
x = 96,513,171.98
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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.