Finding the Fourth Proportional to 135,660.64, 187,223.52 and 79,070.80
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Solution
The fourth proportional to 135,660.64, 187,223.52 and 79,070.80 is: 109,124.60
Step by Step Solution
- Step 1: Write the proportion equation
135,660.64 : 187,223.52 = 79,070.80 : x - Step 2: Convert to fraction form
135,660.64/187,223.52 = 79,070.80/x - Step 3: Cross multiply
135,660.64x = 187,223.52 × 79,070.80 - Step 4: Simplify right side
135,660.64x = 14,803,913,505.22 - Step 5: Solve for x
x = 14,803,913,505.22/135,660.64 - Step 6: Final answer
x = 109,124.60
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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.