Finding the Fourth Proportional to 128,593.39, 177,417.84 and 83,306.08
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Solution
The fourth proportional to 128,593.39, 177,417.84 and 83,306.08 is: 114,935.80
Step by Step Solution
- Step 1: Write the proportion equation
128,593.39 : 177,417.84 = 83,306.08 : x - Step 2: Convert to fraction form
128,593.39/177,417.84 = 83,306.08/x - Step 3: Cross multiply
128,593.39x = 177,417.84 × 83,306.08 - Step 4: Simplify right side
128,593.39x = 14,779,984,772.47 - Step 5: Solve for x
x = 14,779,984,772.47/128,593.39 - Step 6: Final answer
x = 114,935.80
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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.