Finding the Fourth Proportional to 136,887.99, 188,903.40 and 76,459.51
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Solution
The fourth proportional to 136,887.99, 188,903.40 and 76,459.51 is: 105,512.99
Step by Step Solution
- Step 1: Write the proportion equation
136,887.99 : 188,903.40 = 76,459.51 : x - Step 2: Convert to fraction form
136,887.99/188,903.40 = 76,459.51/x - Step 3: Cross multiply
136,887.99x = 188,903.40 × 76,459.51 - Step 4: Simplify right side
136,887.99x = 14,443,461,401.33 - Step 5: Solve for x
x = 14,443,461,401.33/136,887.99 - Step 6: Final answer
x = 105,512.99
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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.