Finding the Fourth Proportional to 145,877.02, 201,310.35 and 78,809.02
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Solution
The fourth proportional to 145,877.02, 201,310.35 and 78,809.02 is: 108,756.48
Step by Step Solution
- Step 1: Write the proportion equation
145,877.02 : 201,310.35 = 78,809.02 : x - Step 2: Convert to fraction form
145,877.02/201,310.35 = 78,809.02/x - Step 3: Cross multiply
145,877.02x = 201,310.35 × 78,809.02 - Step 4: Simplify right side
145,877.02x = 15,865,071,399.36 - Step 5: Solve for x
x = 15,865,071,399.36/145,877.02 - Step 6: Final answer
x = 108,756.48
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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.