Finding the Third Proportional to 78,742.13 and 121,029.19
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Solution
The third proportional to 78,742.13 and 121,029.19 is: 186,025.77
Step by Step Solution
- Step 1: Write the proportion equation
78,742.13 : 121,029.19 = 121,029.19 : x - Step 2: Convert to fraction form
78,742.13/121,029.19 = 121,029.19/x - Step 3: Cross multiply
78,742.13x = 121,029.19 × 121,029.19 - Step 4: Simplify right side
78,742.13x = 14,648,064,226.91 - Step 5: Solve for x
x = 14,648,064,226.91/78,742.13 - Step 6: Final answer
x = 186,025.77
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These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.