Finding the Fourth Proportional to 118,603.80, 163,678.86 and 70,207.80
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Solution
The fourth proportional to 118,603.80, 163,678.86 and 70,207.80 is: 96,890.09
Step by Step Solution
- Step 1: Write the proportion equation
118,603.80 : 163,678.86 = 70,207.80 : x - Step 2: Convert to fraction form
118,603.80/163,678.86 = 70,207.80/x - Step 3: Cross multiply
118,603.80x = 163,678.86 × 70,207.80 - Step 4: Simplify right side
118,603.80x = 11,491,532,667.11 - Step 5: Solve for x
x = 11,491,532,667.11/118,603.80 - Step 6: Final answer
x = 96,890.09
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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.