Finding the Fourth Proportional to 145,165,811.40, 217,748,717.10 and 134,080,345.80
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Solution
The fourth proportional to 145,165,811.40, 217,748,717.10 and 134,080,345.80 is: 201,120,518.70
Step by Step Solution
- Step 1: Write the proportion equation
145,165,811.40 : 217,748,717.10 = 134,080,345.80 : x - Step 2: Convert to fraction form
145,165,811.40/217,748,717.10 = 134,080,345.80/x - Step 3: Cross multiply
145,165,811.40x = 217,748,717.10 × 134,080,345.80 - Step 4: Simplify right side
145,165,811.40x = 29,195,823,286,274,372 - Step 5: Solve for x
x = 29,195,823,286,274,372/145,165,811.40 - Step 6: Final answer
x = 201,120,518.70
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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.