Finding the Fourth Proportional to 138,989.51, 191,800.36 and 75,325.94
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Solution
The fourth proportional to 138,989.51, 191,800.36 and 75,325.94 is: 103,946.99
Step by Step Solution
- Step 1: Write the proportion equation
138,989.51 : 191,800.36 = 75,325.94 : x - Step 2: Convert to fraction form
138,989.51/191,800.36 = 75,325.94/x - Step 3: Cross multiply
138,989.51x = 191,800.36 × 75,325.94 - Step 4: Simplify right side
138,989.51x = 14,447,541,262.02 - Step 5: Solve for x
x = 14,447,541,262.02/138,989.51 - Step 6: Final answer
x = 103,946.99
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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.