Finding the Fourth Proportional to 128,212,366.84, 176,913,497.04 and 72,437,436.68
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Solution
The fourth proportional to 128,212,366.84, 176,913,497.04 and 72,437,436.68 is: 99,952,606.41
Step by Step Solution
- Step 1: Write the proportion equation
128,212,366.84 : 176,913,497.04 = 72,437,436.68 : x - Step 2: Convert to fraction form
128,212,366.84/176,913,497.04 = 72,437,436.68/x - Step 3: Cross multiply
128,212,366.84x = 176,913,497.04 × 72,437,436.68 - Step 4: Simplify right side
128,212,366.84x = 12,815,160,239,672,368 - Step 5: Solve for x
x = 12,815,160,239,672,368/128,212,366.84 - Step 6: Final answer
x = 99,952,606.41
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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.