Finding the Fourth Proportional to 202,031.19, 278,815.57 and 111,386.99
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Solution
The fourth proportional to 202,031.19, 278,815.57 and 111,386.99 is: 153,720.96
Step by Step Solution
- Step 1: Write the proportion equation
202,031.19 : 278,815.57 = 111,386.99 : x - Step 2: Convert to fraction form
202,031.19/278,815.57 = 111,386.99/x - Step 3: Cross multiply
202,031.19x = 278,815.57 × 111,386.99 - Step 4: Simplify right side
202,031.19x = 31,056,427,526.01 - Step 5: Solve for x
x = 31,056,427,526.01/202,031.19 - Step 6: Final answer
x = 153,720.96
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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.