Finding the Fourth Proportional to 90,202.98, 134,751.35 and 65,028.18
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Solution
The fourth proportional to 90,202.98, 134,751.35 and 65,028.18 is: 97,143.52
Step by Step Solution
- Step 1: Write the proportion equation
90,202.98 : 134,751.35 = 65,028.18 : x - Step 2: Convert to fraction form
90,202.98/134,751.35 = 65,028.18/x - Step 3: Cross multiply
90,202.98x = 134,751.35 × 65,028.18 - Step 4: Simplify right side
90,202.98x = 8,762,635,043.04 - Step 5: Solve for x
x = 8,762,635,043.04/90,202.98 - Step 6: Final answer
x = 97,143.52
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.