Finding the Fourth Proportional to 102,790.53, 141,843.11 and 62,498.70
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Solution
The fourth proportional to 102,790.53, 141,843.11 and 62,498.70 is: 86,243.45
Step by Step Solution
- Step 1: Write the proportion equation
102,790.53 : 141,843.11 = 62,498.70 : x - Step 2: Convert to fraction form
102,790.53/141,843.11 = 62,498.70/x - Step 3: Cross multiply
102,790.53x = 141,843.11 × 62,498.70 - Step 4: Simplify right side
102,790.53x = 8,865,009,666.46 - Step 5: Solve for x
x = 8,865,009,666.46/102,790.53 - Step 6: Final answer
x = 86,243.45
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1.5x scale
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.