Finding the Fourth Proportional to 126,609,023.23, 189,909,991.90 and 40,352,605.99
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Solution
The fourth proportional to 126,609,023.23, 189,909,991.90 and 40,352,605.99 is: 60,527,779.78
Step by Step Solution
- Step 1: Write the proportion equation
126,609,023.23 : 189,909,991.90 = 40,352,605.99 : x - Step 2: Convert to fraction form
126,609,023.23/189,909,991.90 = 40,352,605.99/x - Step 3: Cross multiply
126,609,023.23x = 189,909,991.90 × 40,352,605.99 - Step 4: Simplify right side
126,609,023.23x = 7,663,363,076,280,457 - Step 5: Solve for x
x = 7,663,363,076,280,457/126,609,023.23 - Step 6: Final answer
x = 60,527,779.78
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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.