Finding the Fourth Proportional to 138,611,756.50, 191,285,735.62 and 76,733,128.42
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Solution
The fourth proportional to 138,611,756.50, 191,285,735.62 and 76,733,128.42 is: 105,892,554.04
Step by Step Solution
- Step 1: Write the proportion equation
138,611,756.50 : 191,285,735.62 = 76,733,128.42 : x - Step 2: Convert to fraction form
138,611,756.50/191,285,735.62 = 76,733,128.42/x - Step 3: Cross multiply
138,611,756.50x = 191,285,735.62 × 76,733,128.42 - Step 4: Simplify right side
138,611,756.50x = 14,677,952,916,243,630 - Step 5: Solve for x
x = 14,677,952,916,243,630/138,611,756.50 - Step 6: Final answer
x = 105,892,554.04
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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.