Finding the Fourth Proportional to 121,278,806.30, 181,918,209.45 and 66,670,291.10
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Solution
The fourth proportional to 121,278,806.30, 181,918,209.45 and 66,670,291.10 is: 100,005,436.65
Step by Step Solution
- Step 1: Write the proportion equation
121,278,806.30 : 181,918,209.45 = 66,670,291.10 : x - Step 2: Convert to fraction form
121,278,806.30/181,918,209.45 = 66,670,291.10/x - Step 3: Cross multiply
121,278,806.30x = 181,918,209.45 × 66,670,291.10 - Step 4: Simplify right side
121,278,806.30x = 12,128,539,980,422,270 - Step 5: Solve for x
x = 12,128,539,980,422,270/121,278,806.30 - Step 6: Final answer
x = 100,005,436.65
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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.