Finding the Fourth Proportional to 128,325.93, 177,090.90 and 70,969.11
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Solution
The fourth proportional to 128,325.93, 177,090.90 and 70,969.11 is: 97,937.99
Step by Step Solution
- Step 1: Write the proportion equation
128,325.93 : 177,090.90 = 70,969.11 : x - Step 2: Convert to fraction form
128,325.93/177,090.90 = 70,969.11/x - Step 3: Cross multiply
128,325.93x = 177,090.90 × 70,969.11 - Step 4: Simplify right side
128,325.93x = 12,567,983,562.10 - Step 5: Solve for x
x = 12,567,983,562.10/128,325.93 - Step 6: Final answer
x = 97,937.99
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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.