Finding the Fourth Proportional to 12,128,139.12, 16,734,925.44 and 6,970,504.80
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Solution
The fourth proportional to 12,128,139.12, 16,734,925.44 and 6,970,504.80 is: 9,618,200.86
Step by Step Solution
- Step 1: Write the proportion equation
12,128,139.12 : 16,734,925.44 = 6,970,504.80 : x - Step 2: Convert to fraction form
12,128,139.12/16,734,925.44 = 6,970,504.80/x - Step 3: Cross multiply
12,128,139.12x = 16,734,925.44 × 6,970,504.80 - Step 4: Simplify right side
12,128,139.12x = 116,650,878,107,162.11 - Step 5: Solve for x
x = 116,650,878,107,162.11/12,128,139.12 - Step 6: Final answer
x = 9,618,200.86
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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.