Finding the Fourth Proportional to 129,894,174.57, 179,252,532.79 and 70,353,989.49
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Solution
The fourth proportional to 129,894,174.57, 179,252,532.79 and 70,353,989.49 is: 97,087,731.99
Step by Step Solution
- Step 1: Write the proportion equation
129,894,174.57 : 179,252,532.79 = 70,353,989.49 : x - Step 2: Convert to fraction form
129,894,174.57/179,252,532.79 = 70,353,989.49/x - Step 3: Cross multiply
129,894,174.57x = 179,252,532.79 × 70,353,989.49 - Step 4: Simplify right side
129,894,174.57x = 12,611,130,807,963,538 - Step 5: Solve for x
x = 12,611,130,807,963,538/129,894,174.57 - Step 6: Final answer
x = 97,087,731.99
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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.