Finding the Fourth Proportional to 128,014.21, 176,726.05 and 93,520.23
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Solution
The fourth proportional to 128,014.21, 176,726.05 and 93,520.23 is: 129,106.46
Step by Step Solution
- Step 1: Write the proportion equation
128,014.21 : 176,726.05 = 93,520.23 : x - Step 2: Convert to fraction form
128,014.21/176,726.05 = 93,520.23/x - Step 3: Cross multiply
128,014.21x = 176,726.05 × 93,520.23 - Step 4: Simplify right side
128,014.21x = 16,527,460,842.99 - Step 5: Solve for x
x = 16,527,460,842.99/128,014.21 - Step 6: Final answer
x = 129,106.46
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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.