Finding the Fourth Proportional to 185,638.79, 278,413.57 and 85,702.99
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Solution
The fourth proportional to 185,638.79, 278,413.57 and 85,702.99 is: 128,533.89
Step by Step Solution
- Step 1: Write the proportion equation
185,638.79 : 278,413.57 = 85,702.99 : x - Step 2: Convert to fraction form
185,638.79/278,413.57 = 85,702.99/x - Step 3: Cross multiply
185,638.79x = 278,413.57 × 85,702.99 - Step 4: Simplify right side
185,638.79x = 23,860,874,977.06 - Step 5: Solve for x
x = 23,860,874,977.06/185,638.79 - Step 6: Final answer
x = 128,533.89
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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.