Finding the Fourth Proportional to 140,240,776.67, 193,533,244.58 and 78,363,723.23
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Solution
The fourth proportional to 140,240,776.67, 193,533,244.58 and 78,363,723.23 is: 108,142,481.62
Step by Step Solution
- Step 1: Write the proportion equation
140,240,776.67 : 193,533,244.58 = 78,363,723.23 : x - Step 2: Convert to fraction form
140,240,776.67/193,533,244.58 = 78,363,723.23/x - Step 3: Cross multiply
140,240,776.67x = 193,533,244.58 × 78,363,723.23 - Step 4: Simplify right side
140,240,776.67x = 15,165,985,614,071,020 - Step 5: Solve for x
x = 15,165,985,614,071,020/140,240,776.67 - Step 6: Final answer
x = 108,142,481.62
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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.