Finding the Fourth Proportional to 128,073.23, 176,746.97 and 70,720.64
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Solution
The fourth proportional to 128,073.23, 176,746.97 and 70,720.64 is: 97,597.75
Step by Step Solution
- Step 1: Write the proportion equation
128,073.23 : 176,746.97 = 70,720.64 : x - Step 2: Convert to fraction form
128,073.23/176,746.97 = 70,720.64/x - Step 3: Cross multiply
128,073.23x = 176,746.97 × 70,720.64 - Step 4: Simplify right side
128,073.23x = 12,499,659,455.13 - Step 5: Solve for x
x = 12,499,659,455.13/128,073.23 - Step 6: Final answer
x = 97,597.75
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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.