Finding the Fourth Proportional to 154,138.24, 212,733.36 and 90,510.88
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Solution
The fourth proportional to 154,138.24, 212,733.36 and 90,510.88 is: 124,918.28
Step by Step Solution
- Step 1: Write the proportion equation
154,138.24 : 212,733.36 = 90,510.88 : x - Step 2: Convert to fraction form
154,138.24/212,733.36 = 90,510.88/x - Step 3: Cross multiply
154,138.24x = 212,733.36 × 90,510.88 - Step 4: Simplify right side
154,138.24x = 19,254,683,618.96 - Step 5: Solve for x
x = 19,254,683,618.96/154,138.24 - Step 6: Final answer
x = 124,918.28
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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.