Finding the Fourth Proportional to 128,044.98, 176,701.05 and 74,334.98
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Solution
The fourth proportional to 128,044.98, 176,701.05 and 74,334.98 is: 102,581.68
Step by Step Solution
- Step 1: Write the proportion equation
128,044.98 : 176,701.05 = 74,334.98 : x - Step 2: Convert to fraction form
128,044.98/176,701.05 = 74,334.98/x - Step 3: Cross multiply
128,044.98x = 176,701.05 × 74,334.98 - Step 4: Simplify right side
128,044.98x = 13,135,069,017.73 - Step 5: Solve for x
x = 13,135,069,017.73/128,044.98 - Step 6: Final answer
x = 102,581.68
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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.