Finding the Fourth Proportional to 138,154,663.58, 190,670,154.42 and 78,630,432.96
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Solution
The fourth proportional to 138,154,663.58, 190,670,154.42 and 78,630,432.96 is: 108,519,512.89
Step by Step Solution
- Step 1: Write the proportion equation
138,154,663.58 : 190,670,154.42 = 78,630,432.96 : x - Step 2: Convert to fraction form
138,154,663.58/190,670,154.42 = 78,630,432.96/x - Step 3: Cross multiply
138,154,663.58x = 190,670,154.42 × 78,630,432.96 - Step 4: Simplify right side
138,154,663.58x = 14,992,476,794,594,656 - Step 5: Solve for x
x = 14,992,476,794,594,656/138,154,663.58 - Step 6: Final answer
x = 108,519,512.89
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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.