Finding the Fourth Proportional to 135,707.76, 187,246.68 and 78,334.96
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Solution
The fourth proportional to 135,707.76, 187,246.68 and 78,334.96 is: 108,084.91
Step by Step Solution
- Step 1: Write the proportion equation
135,707.76 : 187,246.68 = 78,334.96 : x - Step 2: Convert to fraction form
135,707.76/187,246.68 = 78,334.96/x - Step 3: Cross multiply
135,707.76x = 187,246.68 × 78,334.96 - Step 4: Simplify right side
135,707.76x = 14,667,961,187.93 - Step 5: Solve for x
x = 14,667,961,187.93/135,707.76 - Step 6: Final answer
x = 108,084.91
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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.