Finding the Fourth Proportional to 145,720.94, 201,089.49 and 81,188.66
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Solution
The fourth proportional to 145,720.94, 201,089.49 and 81,188.66 is: 112,037.34
Step by Step Solution
- Step 1: Write the proportion equation
145,720.94 : 201,089.49 = 81,188.66 : x - Step 2: Convert to fraction form
145,720.94/201,089.49 = 81,188.66/x - Step 3: Cross multiply
145,720.94x = 201,089.49 × 81,188.66 - Step 4: Simplify right side
145,720.94x = 16,326,186,233.18 - Step 5: Solve for x
x = 16,326,186,233.18/145,720.94 - Step 6: Final answer
x = 112,037.34
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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.