Finding the Fourth Proportional to 137,889,952.92, 190,299,510.81 and 79,163,950.95
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Solution
The fourth proportional to 137,889,952.92, 190,299,510.81 and 79,163,950.95 is: 109,252,783.26
Step by Step Solution
- Step 1: Write the proportion equation
137,889,952.92 : 190,299,510.81 = 79,163,950.95 : x - Step 2: Convert to fraction form
137,889,952.92/190,299,510.81 = 79,163,950.95/x - Step 3: Cross multiply
137,889,952.92x = 190,299,510.81 × 79,163,950.95 - Step 4: Simplify right side
137,889,952.92x = 15,064,861,139,571,836 - Step 5: Solve for x
x = 15,064,861,139,571,836/137,889,952.92 - Step 6: Final answer
x = 109,252,783.26
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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.