Finding the Fourth Proportional to 176,781.21, 243,983.19 and 100,319.14
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Solution
The fourth proportional to 176,781.21, 243,983.19 and 100,319.14 is: 138,454.67
Step by Step Solution
- Step 1: Write the proportion equation
176,781.21 : 243,983.19 = 100,319.14 : x - Step 2: Convert to fraction form
176,781.21/243,983.19 = 100,319.14/x - Step 3: Cross multiply
176,781.21x = 243,983.19 × 100,319.14 - Step 4: Simplify right side
176,781.21x = 24,476,183,795.26 - Step 5: Solve for x
x = 24,476,183,795.26/176,781.21 - Step 6: Final answer
x = 138,454.67
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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.