Finding the Fourth Proportional to 207,679,590.10, 286,686,079.86 and 129,401,818.66
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Solution
The fourth proportional to 207,679,590.10, 286,686,079.86 and 129,401,818.66 is: 178,629,494.12
Step by Step Solution
- Step 1: Write the proportion equation
207,679,590.10 : 286,686,079.86 = 129,401,818.66 : x - Step 2: Convert to fraction form
207,679,590.10/286,686,079.86 = 129,401,818.66/x - Step 3: Cross multiply
207,679,590.10x = 286,686,079.86 × 129,401,818.66 - Step 4: Simplify right side
207,679,590.10x = 37,097,700,118,390,000 - Step 5: Solve for x
x = 37,097,700,118,390,000/207,679,590.10 - Step 6: Final answer
x = 178,629,494.12
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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.