Finding the Fourth Proportional to 140,130.96, 193,384.84 and 76,472.88
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Solution
The fourth proportional to 140,130.96, 193,384.84 and 76,472.88 is: 105,534.82
Step by Step Solution
- Step 1: Write the proportion equation
140,130.96 : 193,384.84 = 76,472.88 : x - Step 2: Convert to fraction form
140,130.96/193,384.84 = 76,472.88/x - Step 3: Cross multiply
140,130.96x = 193,384.84 × 76,472.88 - Step 4: Simplify right side
140,130.96x = 14,788,695,663.14 - Step 5: Solve for x
x = 14,788,695,663.14/140,130.96 - Step 6: Final answer
x = 105,534.82
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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.