Finding the Fourth Proportional to 157,688.40, 236,459.70 and 68,896.20
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Solution
The fourth proportional to 157,688.40, 236,459.70 and 68,896.20 is: 103,312.45
Step by Step Solution
- Step 1: Write the proportion equation
157,688.40 : 236,459.70 = 68,896.20 : x - Step 2: Convert to fraction form
157,688.40/236,459.70 = 68,896.20/x - Step 3: Cross multiply
157,688.40x = 236,459.70 × 68,896.20 - Step 4: Simplify right side
157,688.40x = 16,291,174,783.14 - Step 5: Solve for x
x = 16,291,174,783.14/157,688.40 - Step 6: Final answer
x = 103,312.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.