Finding the Fourth Proportional to 207,943.80, 312,023.70 and 97,135.80
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Solution
The fourth proportional to 207,943.80, 312,023.70 and 97,135.80 is: 145,754.15
Step by Step Solution
- Step 1: Write the proportion equation
207,943.80 : 312,023.70 = 97,135.80 : x - Step 2: Convert to fraction form
207,943.80/312,023.70 = 97,135.80/x - Step 3: Cross multiply
207,943.80x = 312,023.70 × 97,135.80 - Step 4: Simplify right side
207,943.80x = 30,308,671,718.46 - Step 5: Solve for x
x = 30,308,671,718.46/207,943.80 - Step 6: Final answer
x = 145,754.15
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.