Finding the Fourth Proportional to 158,164.77, 218,270.11 and 86,545.99
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Solution
The fourth proportional to 158,164.77, 218,270.11 and 86,545.99 is: 119,434.95
Step by Step Solution
- Step 1: Write the proportion equation
158,164.77 : 218,270.11 = 86,545.99 : x - Step 2: Convert to fraction form
158,164.77/218,270.11 = 86,545.99/x - Step 3: Cross multiply
158,164.77x = 218,270.11 × 86,545.99 - Step 4: Simplify right side
158,164.77x = 18,890,401,666.01 - Step 5: Solve for x
x = 18,890,401,666.01/158,164.77 - Step 6: Final answer
x = 119,434.95
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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.