Finding the Fourth Proportional to 100,890.19, 138,220.19 and 97,106.68
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Solution
The fourth proportional to 100,890.19, 138,220.19 and 97,106.68 is: 133,036.76
Step by Step Solution
- Step 1: Write the proportion equation
100,890.19 : 138,220.19 = 97,106.68 : x - Step 2: Convert to fraction form
100,890.19/138,220.19 = 97,106.68/x - Step 3: Cross multiply
100,890.19x = 138,220.19 × 97,106.68 - Step 4: Simplify right side
100,890.19x = 13,422,103,811.26 - Step 5: Solve for x
x = 13,422,103,811.26/100,890.19 - Step 6: Final answer
x = 133,036.76
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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.