Finding the Fourth Proportional to 130,654.05, 179,128.76 and 128,292.09
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Solution
The fourth proportional to 130,654.05, 179,128.76 and 128,292.09 is: 175,890.47
Step by Step Solution
- Step 1: Write the proportion equation
130,654.05 : 179,128.76 = 128,292.09 : x - Step 2: Convert to fraction form
130,654.05/179,128.76 = 128,292.09/x - Step 3: Cross multiply
130,654.05x = 179,128.76 × 128,292.09 - Step 4: Simplify right side
130,654.05x = 22,980,802,358.05 - Step 5: Solve for x
x = 22,980,802,358.05/130,654.05 - Step 6: Final answer
x = 175,890.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.