Finding the Fourth Proportional to 100,617.02, 138,848.65 and 55,294.99
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Solution
The fourth proportional to 100,617.02, 138,848.65 and 55,294.99 is: 76,305.52
Step by Step Solution
- Step 1: Write the proportion equation
100,617.02 : 138,848.65 = 55,294.99 : x - Step 2: Convert to fraction form
100,617.02/138,848.65 = 55,294.99/x - Step 3: Cross multiply
100,617.02x = 138,848.65 × 55,294.99 - Step 4: Simplify right side
100,617.02x = 7,677,634,227.90 - Step 5: Solve for x
x = 7,677,634,227.90/100,617.02 - Step 6: Final answer
x = 76,305.52
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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.