Finding the Fourth Proportional to 153,981.32, 212,640.98 and 145,595.08
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Solution
The fourth proportional to 153,981.32, 212,640.98 and 145,595.08 is: 201,059.98
Step by Step Solution
- Step 1: Write the proportion equation
153,981.32 : 212,640.98 = 145,595.08 : x - Step 2: Convert to fraction form
153,981.32/212,640.98 = 145,595.08/x - Step 3: Cross multiply
153,981.32x = 212,640.98 × 145,595.08 - Step 4: Simplify right side
153,981.32x = 30,959,480,494.38 - Step 5: Solve for x
x = 30,959,480,494.38/153,981.32 - Step 6: Final answer
x = 201,059.98
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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.