Finding the Fourth Proportional to 104,115.15, 143,678.70 and 56,368.53
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Solution
The fourth proportional to 104,115.15, 143,678.70 and 56,368.53 is: 77,788.46
Step by Step Solution
- Step 1: Write the proportion equation
104,115.15 : 143,678.70 = 56,368.53 : x - Step 2: Convert to fraction form
104,115.15/143,678.70 = 56,368.53/x - Step 3: Cross multiply
104,115.15x = 143,678.70 × 56,368.53 - Step 4: Simplify right side
104,115.15x = 8,098,957,111.31 - Step 5: Solve for x
x = 8,098,957,111.31/104,115.15 - Step 6: Final answer
x = 77,788.46
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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.