Finding the Fourth Proportional to 135,506.76, 187,030.44 and 90,186.68
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Solution
The fourth proportional to 135,506.76, 187,030.44 and 90,186.68 is: 124,478.32
Step by Step Solution
- Step 1: Write the proportion equation
135,506.76 : 187,030.44 = 90,186.68 : x - Step 2: Convert to fraction form
135,506.76/187,030.44 = 90,186.68/x - Step 3: Cross multiply
135,506.76x = 187,030.44 × 90,186.68 - Step 4: Simplify right side
135,506.76x = 16,867,654,442.54 - Step 5: Solve for x
x = 16,867,654,442.54/135,506.76 - Step 6: Final answer
x = 124,478.32
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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.