Finding the Fourth Proportional to 132,621.76, 183,056.68 and 86,688.08
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Solution
The fourth proportional to 132,621.76, 183,056.68 and 86,688.08 is: 119,654.81
Step by Step Solution
- Step 1: Write the proportion equation
132,621.76 : 183,056.68 = 86,688.08 : x - Step 2: Convert to fraction form
132,621.76/183,056.68 = 86,688.08/x - Step 3: Cross multiply
132,621.76x = 183,056.68 × 86,688.08 - Step 4: Simplify right side
132,621.76x = 15,868,832,120.37 - Step 5: Solve for x
x = 15,868,832,120.37/132,621.76 - Step 6: Final answer
x = 119,654.81
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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.