Finding the Fourth Proportional to 102,643.34, 154,013.74 and 71,101.94
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Solution
The fourth proportional to 102,643.34, 154,013.74 and 71,101.94 is: 106,686.66
Step by Step Solution
- Step 1: Write the proportion equation
102,643.34 : 154,013.74 = 71,101.94 : x - Step 2: Convert to fraction form
102,643.34/154,013.74 = 71,101.94/x - Step 3: Cross multiply
102,643.34x = 154,013.74 × 71,101.94 - Step 4: Simplify right side
102,643.34x = 10,950,674,752.83 - Step 5: Solve for x
x = 10,950,674,752.83/102,643.34 - Step 6: Final answer
x = 106,686.66
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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.