Finding the Fourth Proportional to 118,221.66, 163,206.09 and 91,303.74
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Solution
The fourth proportional to 118,221.66, 163,206.09 and 91,303.74 is: 126,045.65
Step by Step Solution
- Step 1: Write the proportion equation
118,221.66 : 163,206.09 = 91,303.74 : x - Step 2: Convert to fraction form
118,221.66/163,206.09 = 91,303.74/x - Step 3: Cross multiply
118,221.66x = 163,206.09 × 91,303.74 - Step 4: Simplify right side
118,221.66x = 14,901,326,407.78 - Step 5: Solve for x
x = 14,901,326,407.78/118,221.66 - Step 6: Final answer
x = 126,045.65
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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.