Finding the Fourth Proportional to 139,284.08, 209,045.40 and 138,235.68
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Solution
The fourth proportional to 139,284.08, 209,045.40 and 138,235.68 is: 207,471.91
Step by Step Solution
- Step 1: Write the proportion equation
139,284.08 : 209,045.40 = 138,235.68 : x - Step 2: Convert to fraction form
139,284.08/209,045.40 = 138,235.68/x - Step 3: Cross multiply
139,284.08x = 209,045.40 × 138,235.68 - Step 4: Simplify right side
139,284.08x = 28,897,533,019.87 - Step 5: Solve for x
x = 28,897,533,019.87/139,284.08 - Step 6: Final answer
x = 207,471.91
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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.