Finding the Fourth Proportional to 138,258.48, 190,794.59 and 77,828.94
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Solution
The fourth proportional to 138,258.48, 190,794.59 and 77,828.94 is: 107,402.75
Step by Step Solution
- Step 1: Write the proportion equation
138,258.48 : 190,794.59 = 77,828.94 : x - Step 2: Convert to fraction form
138,258.48/190,794.59 = 77,828.94/x - Step 3: Cross multiply
138,258.48x = 190,794.59 × 77,828.94 - Step 4: Simplify right side
138,258.48x = 14,849,340,308.29 - Step 5: Solve for x
x = 14,849,340,308.29/138,258.48 - Step 6: Final answer
x = 107,402.75
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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.