Finding the Fourth Proportional to 139,590.06, 192,701.21 and 85,921.08
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Solution
The fourth proportional to 139,590.06, 192,701.21 and 85,921.08 is: 118,612.28
Step by Step Solution
- Step 1: Write the proportion equation
139,590.06 : 192,701.21 = 85,921.08 : x - Step 2: Convert to fraction form
139,590.06/192,701.21 = 85,921.08/x - Step 3: Cross multiply
139,590.06x = 192,701.21 × 85,921.08 - Step 4: Simplify right side
139,590.06x = 16,557,095,650.90 - Step 5: Solve for x
x = 16,557,095,650.90/139,590.06 - Step 6: Final answer
x = 118,612.28
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.