Finding the Fourth Proportional to 145,970.07, 201,438.69 and 78,902.07
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Solution
The fourth proportional to 145,970.07, 201,438.69 and 78,902.07 is: 108,884.85
Step by Step Solution
- Step 1: Write the proportion equation
145,970.07 : 201,438.69 = 78,902.07 : x - Step 2: Convert to fraction form
145,970.07/201,438.69 = 78,902.07/x - Step 3: Cross multiply
145,970.07x = 201,438.69 × 78,902.07 - Step 4: Simplify right side
145,970.07x = 15,893,929,619.09 - Step 5: Solve for x
x = 15,893,929,619.09/145,970.07 - Step 6: Final answer
x = 108,884.85
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1.5x scale
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.