Finding the Fourth Proportional to 135,549.68, 187,122.84 and 90,303.08
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Solution
The fourth proportional to 135,549.68, 187,122.84 and 90,303.08 is: 124,661.07
Step by Step Solution
- Step 1: Write the proportion equation
135,549.68 : 187,122.84 = 90,303.08 : x - Step 2: Convert to fraction form
135,549.68/187,122.84 = 90,303.08/x - Step 3: Cross multiply
135,549.68x = 187,122.84 × 90,303.08 - Step 4: Simplify right side
135,549.68x = 16,897,768,790.35 - Step 5: Solve for x
x = 16,897,768,790.35/135,549.68 - Step 6: Final answer
x = 124,661.07
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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.