Finding the Fourth Proportional to 117,890.35, 162,701.09 and 103,220.13
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Solution
The fourth proportional to 117,890.35, 162,701.09 and 103,220.13 is: 142,454.65
Step by Step Solution
- Step 1: Write the proportion equation
117,890.35 : 162,701.09 = 103,220.13 : x - Step 2: Convert to fraction form
117,890.35/162,701.09 = 103,220.13/x - Step 3: Cross multiply
117,890.35x = 162,701.09 × 103,220.13 - Step 4: Simplify right side
117,890.35x = 16,794,028,142.05 - Step 5: Solve for x
x = 16,794,028,142.05/117,890.35 - Step 6: Final answer
x = 142,454.65
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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.