Finding the Fourth Proportional to 106,938.18, 147,578.16 and 61,612.56
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Solution
The fourth proportional to 106,938.18, 147,578.16 and 61,612.56 is: 85,027.33
Step by Step Solution
- Step 1: Write the proportion equation
106,938.18 : 147,578.16 = 61,612.56 : x - Step 2: Convert to fraction form
106,938.18/147,578.16 = 61,612.56/x - Step 3: Cross multiply
106,938.18x = 147,578.16 × 61,612.56 - Step 4: Simplify right side
106,938.18x = 9,092,668,237.69 - Step 5: Solve for x
x = 9,092,668,237.69/106,938.18 - Step 6: Final answer
x = 85,027.33
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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.