Finding the Fourth Proportional to 138,154,658.58, 190,670,147.51 and 78,630,427.94
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Solution
The fourth proportional to 138,154,658.58, 190,670,147.51 and 78,630,427.94 is: 108,519,505.94
Step by Step Solution
- Step 1: Write the proportion equation
138,154,658.58 : 190,670,147.51 = 78,630,427.94 : x - Step 2: Convert to fraction form
138,154,658.58/190,670,147.51 = 78,630,427.94/x - Step 3: Cross multiply
138,154,658.58x = 190,670,147.51 × 78,630,427.94 - Step 4: Simplify right side
138,154,658.58x = 14,992,475,292,747,722 - Step 5: Solve for x
x = 14,992,475,292,747,722/138,154,658.58 - Step 6: Final answer
x = 108,519,505.94
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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.