Finding the Fourth Proportional to 101,688.98, 140,247.60 and 71,573.99
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Solution
The fourth proportional to 101,688.98, 140,247.60 and 71,573.99 is: 98,713.55
Step by Step Solution
- Step 1: Write the proportion equation
101,688.98 : 140,247.60 = 71,573.99 : x - Step 2: Convert to fraction form
101,688.98/140,247.60 = 71,573.99/x - Step 3: Cross multiply
101,688.98x = 140,247.60 × 71,573.99 - Step 4: Simplify right side
101,688.98x = 10,038,080,319.92 - Step 5: Solve for x
x = 10,038,080,319.92/101,688.98 - Step 6: Final answer
x = 98,713.55
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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.