Finding the Fourth Proportional to 128,054.90, 176,711.13 and 70,692.99
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Solution
The fourth proportional to 128,054.90, 176,711.13 and 70,692.99 is: 97,553.77
Step by Step Solution
- Step 1: Write the proportion equation
128,054.90 : 176,711.13 = 70,692.99 : x - Step 2: Convert to fraction form
128,054.90/176,711.13 = 70,692.99/x - Step 3: Cross multiply
128,054.90x = 176,711.13 × 70,692.99 - Step 4: Simplify right side
128,054.90x = 12,492,238,234.29 - Step 5: Solve for x
x = 12,492,238,234.29/128,054.90 - Step 6: Final answer
x = 97,553.77
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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.