Finding the Fourth Proportional to 102,074.48, 153,115.16 and 78,417.98
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Solution
The fourth proportional to 102,074.48, 153,115.16 and 78,417.98 is: 117,629.61
Step by Step Solution
- Step 1: Write the proportion equation
102,074.48 : 153,115.16 = 78,417.98 : x - Step 2: Convert to fraction form
102,074.48/153,115.16 = 78,417.98/x - Step 3: Cross multiply
102,074.48x = 153,115.16 × 78,417.98 - Step 4: Simplify right side
102,074.48x = 12,006,980,396.91 - Step 5: Solve for x
x = 12,006,980,396.91/102,074.48 - Step 6: Final answer
x = 117,629.61
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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.