Finding the Fourth Proportional to 128,394,005.75, 177,184,067.72 and 69,656,669.04
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Solution
The fourth proportional to 128,394,005.75, 177,184,067.72 and 69,656,669.04 is: 96,126,387.62
Step by Step Solution
- Step 1: Write the proportion equation
128,394,005.75 : 177,184,067.72 = 69,656,669.04 : x - Step 2: Convert to fraction form
128,394,005.75/177,184,067.72 = 69,656,669.04/x - Step 3: Cross multiply
128,394,005.75x = 177,184,067.72 × 69,656,669.04 - Step 4: Simplify right side
128,394,005.75x = 12,342,051,963,984,706 - Step 5: Solve for x
x = 12,342,051,963,984,706/128,394,005.75 - Step 6: Final answer
x = 96,126,387.62
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.