Finding the Fourth Proportional to 197,630.05, 272,729.16 and 106,985.99
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Solution
The fourth proportional to 197,630.05, 272,729.16 and 106,985.99 is: 147,640.50
Step by Step Solution
- Step 1: Write the proportion equation
197,630.05 : 272,729.16 = 106,985.99 : x - Step 2: Convert to fraction form
197,630.05/272,729.16 = 106,985.99/x - Step 3: Cross multiply
197,630.05x = 272,729.16 × 106,985.99 - Step 4: Simplify right side
197,630.05x = 29,178,199,184.47 - Step 5: Solve for x
x = 29,178,199,184.47/197,630.05 - Step 6: Final answer
x = 147,640.50
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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.