Finding the Fourth Proportional to 134,703.84, 185,932.08 and 78,129.12
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Solution
The fourth proportional to 134,703.84, 185,932.08 and 78,129.12 is: 107,841.84
Step by Step Solution
- Step 1: Write the proportion equation
134,703.84 : 185,932.08 = 78,129.12 : x - Step 2: Convert to fraction form
134,703.84/185,932.08 = 78,129.12/x - Step 3: Cross multiply
134,703.84x = 185,932.08 × 78,129.12 - Step 4: Simplify right side
134,703.84x = 14,526,709,790.17 - Step 5: Solve for x
x = 14,526,709,790.17/134,703.84 - Step 6: Final answer
x = 107,841.84
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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.