Finding the Fourth Proportional to 128,850.24, 177,809.91 and 70,706.79
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Solution
The fourth proportional to 128,850.24, 177,809.91 and 70,706.79 is: 97,573.49
Step by Step Solution
- Step 1: Write the proportion equation
128,850.24 : 177,809.91 = 70,706.79 : x - Step 2: Convert to fraction form
128,850.24/177,809.91 = 70,706.79/x - Step 3: Cross multiply
128,850.24x = 177,809.91 × 70,706.79 - Step 4: Simplify right side
128,850.24x = 12,572,367,966.29 - Step 5: Solve for x
x = 12,572,367,966.29/128,850.24 - Step 6: Final answer
x = 97,573.49
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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.