Finding the Fourth Proportional to 87,804,811.20, 131,707,216.80 and 86,125,195.20
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Solution
The fourth proportional to 87,804,811.20, 131,707,216.80 and 86,125,195.20 is: 129,187,792.80
Step by Step Solution
- Step 1: Write the proportion equation
87,804,811.20 : 131,707,216.80 = 86,125,195.20 : x - Step 2: Convert to fraction form
87,804,811.20/131,707,216.80 = 86,125,195.20/x - Step 3: Cross multiply
87,804,811.20x = 131,707,216.80 × 86,125,195.20 - Step 4: Simplify right side
87,804,811.20x = 11,343,309,756,148,720 - Step 5: Solve for x
x = 11,343,309,756,148,720/87,804,811.20 - Step 6: Final answer
x = 129,187,792.80
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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.