Finding the Fourth Proportional to 135,681.92, 187,239.84 and 76,065.92
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Solution
The fourth proportional to 135,681.92, 187,239.84 and 76,065.92 is: 104,970.29
Step by Step Solution
- Step 1: Write the proportion equation
135,681.92 : 187,239.84 = 76,065.92 : x - Step 2: Convert to fraction form
135,681.92/187,239.84 = 76,065.92/x - Step 3: Cross multiply
135,681.92x = 187,239.84 × 76,065.92 - Step 4: Simplify right side
135,681.92x = 14,242,570,690.25 - Step 5: Solve for x
x = 14,242,570,690.25/135,681.92 - Step 6: Final answer
x = 104,970.29
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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.