Finding the Fourth Proportional to 106,938.99, 147,539.66 and 61,615.80
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Solution
The fourth proportional to 106,938.99, 147,539.66 and 61,615.80 is: 85,008.97
Step by Step Solution
- Step 1: Write the proportion equation
106,938.99 : 147,539.66 = 61,615.80 : x - Step 2: Convert to fraction form
106,938.99/147,539.66 = 61,615.80/x - Step 3: Cross multiply
106,938.99x = 147,539.66 × 61,615.80 - Step 4: Simplify right side
106,938.99x = 9,090,773,874.55 - Step 5: Solve for x
x = 9,090,773,874.55/106,938.99 - Step 6: Final answer
x = 85,008.97
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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.