Finding the Fourth Proportional to 93,220.20, 139,731.84 and 66,910.68
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Solution
The fourth proportional to 93,220.20, 139,731.84 and 66,910.68 is: 100,295.35
Step by Step Solution
- Step 1: Write the proportion equation
93,220.20 : 139,731.84 = 66,910.68 : x - Step 2: Convert to fraction form
93,220.20/139,731.84 = 66,910.68/x - Step 3: Cross multiply
93,220.20x = 139,731.84 × 66,910.68 - Step 4: Simplify right side
93,220.20x = 9,349,552,432.05 - Step 5: Solve for x
x = 9,349,552,432.05/93,220.20 - Step 6: Final answer
x = 100,295.35
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1.5x scale
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.