Finding the Fourth Proportional to 102,353.99, 153,530.99 and 39,980.75
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Solution
The fourth proportional to 102,353.99, 153,530.99 and 39,980.75 is: 59,971.13
Step by Step Solution
- Step 1: Write the proportion equation
102,353.99 : 153,530.99 = 39,980.75 : x - Step 2: Convert to fraction form
102,353.99/153,530.99 = 39,980.75/x - Step 3: Cross multiply
102,353.99x = 153,530.99 × 39,980.75 - Step 4: Simplify right side
102,353.99x = 6,138,283,928.54 - Step 5: Solve for x
x = 6,138,283,928.54/102,353.99 - Step 6: Final answer
x = 59,971.13
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Double scale
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Similar ratio
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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.