Finding the Fourth Proportional to 156,975,028.26, 216,623,423.06 and 87,360,390.68
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Solution
The fourth proportional to 156,975,028.26, 216,623,423.06 and 87,360,390.68 is: 120,556,161.57
Step by Step Solution
- Step 1: Write the proportion equation
156,975,028.26 : 216,623,423.06 = 87,360,390.68 : x - Step 2: Convert to fraction form
156,975,028.26/216,623,423.06 = 87,360,390.68/x - Step 3: Cross multiply
156,975,028.26x = 216,623,423.06 × 87,360,390.68 - Step 4: Simplify right side
156,975,028.26x = 18,924,306,868,960,524 - Step 5: Solve for x
x = 18,924,306,868,960,524/156,975,028.26 - Step 6: Final answer
x = 120,556,161.57
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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.