Finding the Fourth Proportional to 97,431.80, 146,147.70 and 42,135.80
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Solution
The fourth proportional to 97,431.80, 146,147.70 and 42,135.80 is: 63,203.70
Step by Step Solution
- Step 1: Write the proportion equation
97,431.80 : 146,147.70 = 42,135.80 : x - Step 2: Convert to fraction form
97,431.80/146,147.70 = 42,135.80/x - Step 3: Cross multiply
97,431.80x = 146,147.70 × 42,135.80 - Step 4: Simplify right side
97,431.80x = 6,158,050,257.66 - Step 5: Solve for x
x = 6,158,050,257.66/97,431.80 - Step 6: Final answer
x = 63,203.70
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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.