Finding the Fourth Proportional to 139,974,257.10, 209,961,385.65 and 131,471,201.10
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Solution
The fourth proportional to 139,974,257.10, 209,961,385.65 and 131,471,201.10 is: 197,206,801.65
Step by Step Solution
- Step 1: Write the proportion equation
139,974,257.10 : 209,961,385.65 = 131,471,201.10 : x - Step 2: Convert to fraction form
139,974,257.10/209,961,385.65 = 131,471,201.10/x - Step 3: Cross multiply
139,974,257.10x = 209,961,385.65 × 131,471,201.10 - Step 4: Simplify right side
139,974,257.10x = 27,603,875,556,025,804 - Step 5: Solve for x
x = 27,603,875,556,025,804/139,974,257.10 - Step 6: Final answer
x = 197,206,801.65
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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.