Finding the Fourth Proportional to 97,291.20, 145,936.80 and 38,107.20
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Solution
The fourth proportional to 97,291.20, 145,936.80 and 38,107.20 is: 57,160.80
Step by Step Solution
- Step 1: Write the proportion equation
97,291.20 : 145,936.80 = 38,107.20 : x - Step 2: Convert to fraction form
97,291.20/145,936.80 = 38,107.20/x - Step 3: Cross multiply
97,291.20x = 145,936.80 × 38,107.20 - Step 4: Simplify right side
97,291.20x = 5,561,242,824.96 - Step 5: Solve for x
x = 5,561,242,824.96/97,291.20 - Step 6: Final answer
x = 57,160.80
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1.5x scale
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.