Finding the Fourth Proportional to 139,386.18, 209,150.82 and 68,307.48
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Solution
The fourth proportional to 139,386.18, 209,150.82 and 68,307.48 is: 102,496.28
Step by Step Solution
- Step 1: Write the proportion equation
139,386.18 : 209,150.82 = 68,307.48 : x - Step 2: Convert to fraction form
139,386.18/209,150.82 = 68,307.48/x - Step 3: Cross multiply
139,386.18x = 209,150.82 × 68,307.48 - Step 4: Simplify right side
139,386.18x = 14,286,565,454.13 - Step 5: Solve for x
x = 14,286,565,454.13/139,386.18 - Step 6: Final answer
x = 102,496.28
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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.