Finding the Fourth Proportional to 117,125.09, 161,521.99 and 76,873.76
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Solution
The fourth proportional to 117,125.09, 161,521.99 and 76,873.76 is: 106,013.18
Step by Step Solution
- Step 1: Write the proportion equation
117,125.09 : 161,521.99 = 76,873.76 : x - Step 2: Convert to fraction form
117,125.09/161,521.99 = 76,873.76/x - Step 3: Cross multiply
117,125.09x = 161,521.99 × 76,873.76 - Step 4: Simplify right side
117,125.09x = 12,416,802,693.98 - Step 5: Solve for x
x = 12,416,802,693.98/117,125.09 - Step 6: Final answer
x = 106,013.18
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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.