Finding the Fourth Proportional to 135,432.38, 201,718.63 and 128,319.77
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Solution
The fourth proportional to 135,432.38, 201,718.63 and 128,319.77 is: 191,124.81
Step by Step Solution
- Step 1: Write the proportion equation
135,432.38 : 201,718.63 = 128,319.77 : x - Step 2: Convert to fraction form
135,432.38/201,718.63 = 128,319.77/x - Step 3: Cross multiply
135,432.38x = 201,718.63 × 128,319.77 - Step 4: Simplify right side
135,432.38x = 25,884,488,206.32 - Step 5: Solve for x
x = 25,884,488,206.32/135,432.38 - Step 6: Final answer
x = 191,124.81
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.