Finding the Fourth Proportional to 189,155.84, 261,031.56 and 103,115.66
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Solution
The fourth proportional to 189,155.84, 261,031.56 and 103,115.66 is: 142,297.70
Step by Step Solution
- Step 1: Write the proportion equation
189,155.84 : 261,031.56 = 103,115.66 : x - Step 2: Convert to fraction form
189,155.84/261,031.56 = 103,115.66/x - Step 3: Cross multiply
189,155.84x = 261,031.56 × 103,115.66 - Step 4: Simplify right side
189,155.84x = 26,916,441,590.23 - Step 5: Solve for x
x = 26,916,441,590.23/189,155.84 - Step 6: Final answer
x = 142,297.70
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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.