Finding the Fourth Proportional to 93,170.80, 128,330.76 and 71,619.28
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Solution
The fourth proportional to 93,170.80, 128,330.76 and 71,619.28 is: 98,646.32
Step by Step Solution
- Step 1: Write the proportion equation
93,170.80 : 128,330.76 = 71,619.28 : x - Step 2: Convert to fraction form
93,170.80/128,330.76 = 71,619.28/x - Step 3: Cross multiply
93,170.80x = 128,330.76 × 71,619.28 - Step 4: Simplify right side
93,170.80x = 9,190,956,633.05 - Step 5: Solve for x
x = 9,190,956,633.05/93,170.80 - Step 6: Final answer
x = 98,646.32
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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.