Finding the Fourth Proportional to 97,931.97, 135,187.44 and 66,143.91
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Solution
The fourth proportional to 97,931.97, 135,187.44 and 66,143.91 is: 91,306.50
Step by Step Solution
- Step 1: Write the proportion equation
97,931.97 : 135,187.44 = 66,143.91 : x - Step 2: Convert to fraction form
97,931.97/135,187.44 = 66,143.91/x - Step 3: Cross multiply
97,931.97x = 135,187.44 × 66,143.91 - Step 4: Simplify right side
97,931.97x = 8,941,825,864.49 - Step 5: Solve for x
x = 8,941,825,864.49/97,931.97 - Step 6: Final answer
x = 91,306.50
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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.