Finding the Fourth Proportional to 140,398.27, 193,727.21 and 79,970.09
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Solution
The fourth proportional to 140,398.27, 193,727.21 and 79,970.09 is: 110,345.96
Step by Step Solution
- Step 1: Write the proportion equation
140,398.27 : 193,727.21 = 79,970.09 : x - Step 2: Convert to fraction form
140,398.27/193,727.21 = 79,970.09/x - Step 3: Cross multiply
140,398.27x = 193,727.21 × 79,970.09 - Step 4: Simplify right side
140,398.27x = 15,492,381,050.66 - Step 5: Solve for x
x = 15,492,381,050.66/140,398.27 - Step 6: Final answer
x = 110,345.96
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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.