Finding the Fourth Proportional to 154,238.09, 212,847.08 and 86,254.29
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Solution
The fourth proportional to 154,238.09, 212,847.08 and 86,254.29 is: 119,030.09
Step by Step Solution
- Step 1: Write the proportion equation
154,238.09 : 212,847.08 = 86,254.29 : x - Step 2: Convert to fraction form
154,238.09/212,847.08 = 86,254.29/x - Step 3: Cross multiply
154,238.09x = 212,847.08 × 86,254.29 - Step 4: Simplify right side
154,238.09x = 18,358,973,332.70 - Step 5: Solve for x
x = 18,358,973,332.70/154,238.09 - Step 6: Final answer
x = 119,030.09
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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.