Finding the Fourth Proportional to 138,288.36, 191,088.81 and 119,392.68
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Solution
The fourth proportional to 138,288.36, 191,088.81 and 119,392.68 is: 164,978.49
Step by Step Solution
- Step 1: Write the proportion equation
138,288.36 : 191,088.81 = 119,392.68 : x - Step 2: Convert to fraction form
138,288.36/191,088.81 = 119,392.68/x - Step 3: Cross multiply
138,288.36x = 191,088.81 × 119,392.68 - Step 4: Simplify right side
138,288.36x = 22,814,605,143.91 - Step 5: Solve for x
x = 22,814,605,143.91/138,288.36 - Step 6: Final answer
x = 164,978.49
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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.