Finding the Fourth Proportional to 103,012.92, 154,258.02 and 86,329.08
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Solution
The fourth proportional to 103,012.92, 154,258.02 and 86,329.08 is: 129,274.59
Step by Step Solution
- Step 1: Write the proportion equation
103,012.92 : 154,258.02 = 86,329.08 : x - Step 2: Convert to fraction form
103,012.92/154,258.02 = 86,329.08/x - Step 3: Cross multiply
103,012.92x = 154,258.02 × 86,329.08 - Step 4: Simplify right side
103,012.92x = 13,316,952,949.22 - Step 5: Solve for x
x = 13,316,952,949.22/103,012.92 - Step 6: Final answer
x = 129,274.59
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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.