Finding the Fourth Proportional to 117,974.68, 176,787.02 and 86,656.84
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Solution
The fourth proportional to 117,974.68, 176,787.02 and 86,656.84 is: 129,856.72
Step by Step Solution
- Step 1: Write the proportion equation
117,974.68 : 176,787.02 = 86,656.84 : x - Step 2: Convert to fraction form
117,974.68/176,787.02 = 86,656.84/x - Step 3: Cross multiply
117,974.68x = 176,787.02 × 86,656.84 - Step 4: Simplify right side
117,974.68x = 15,319,804,280.89 - Step 5: Solve for x
x = 15,319,804,280.89/117,974.68 - Step 6: Final answer
x = 129,856.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.