Finding the Fourth Proportional to 145,165,911.40, 217,748,867.10 and 134,080,445.80
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Solution
The fourth proportional to 145,165,911.40, 217,748,867.10 and 134,080,445.80 is: 201,120,668.70
Step by Step Solution
- Step 1: Write the proportion equation
145,165,911.40 : 217,748,867.10 = 134,080,445.80 : x - Step 2: Convert to fraction form
145,165,911.40/217,748,867.10 = 134,080,445.80/x - Step 3: Cross multiply
145,165,911.40x = 217,748,867.10 × 134,080,445.80 - Step 4: Simplify right side
145,165,911.40x = 29,195,865,173,212,952 - Step 5: Solve for x
x = 29,195,865,173,212,952/145,165,911.40 - Step 6: Final answer
x = 201,120,668.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.