Finding the Fourth Proportional to 143,432.24, 197,932.82 and 78,898.12
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Solution
The fourth proportional to 143,432.24, 197,932.82 and 78,898.12 is: 108,877.38
Step by Step Solution
- Step 1: Write the proportion equation
143,432.24 : 197,932.82 = 78,898.12 : x - Step 2: Convert to fraction form
143,432.24/197,932.82 = 78,898.12/x - Step 3: Cross multiply
143,432.24x = 197,932.82 × 78,898.12 - Step 4: Simplify right side
143,432.24x = 15,616,526,494.98 - Step 5: Solve for x
x = 15,616,526,494.98/143,432.24 - Step 6: Final answer
x = 108,877.38
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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.