Finding the Fourth Proportional to 191,115.98, 286,708.56 and 78,733.74
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Solution
The fourth proportional to 191,115.98, 286,708.56 and 78,733.74 is: 118,114.86
Step by Step Solution
- Step 1: Write the proportion equation
191,115.98 : 286,708.56 = 78,733.74 : x - Step 2: Convert to fraction form
191,115.98/286,708.56 = 78,733.74/x - Step 3: Cross multiply
191,115.98x = 286,708.56 × 78,733.74 - Step 4: Simplify right side
191,115.98x = 22,573,637,218.81 - Step 5: Solve for x
x = 22,573,637,218.81/191,115.98 - Step 6: Final answer
x = 118,114.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.