Finding the Fourth Proportional to 138,048.18, 190,036.35 and 102,170.58
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Solution
The fourth proportional to 138,048.18, 190,036.35 and 102,170.58 is: 140,647.45
Step by Step Solution
- Step 1: Write the proportion equation
138,048.18 : 190,036.35 = 102,170.58 : x - Step 2: Convert to fraction form
138,048.18/190,036.35 = 102,170.58/x - Step 3: Cross multiply
138,048.18x = 190,036.35 × 102,170.58 - Step 4: Simplify right side
138,048.18x = 19,416,124,100.58 - Step 5: Solve for x
x = 19,416,124,100.58/138,048.18 - Step 6: Final answer
x = 140,647.45
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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.