Finding the Fourth Proportional to 168,403,201.20, 252,604,801.80 and 155,806,081.20
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Solution
The fourth proportional to 168,403,201.20, 252,604,801.80 and 155,806,081.20 is: 233,709,121.80
Step by Step Solution
- Step 1: Write the proportion equation
168,403,201.20 : 252,604,801.80 = 155,806,081.20 : x - Step 2: Convert to fraction form
168,403,201.20/252,604,801.80 = 155,806,081.20/x - Step 3: Cross multiply
168,403,201.20x = 252,604,801.80 × 155,806,081.20 - Step 4: Simplify right side
168,403,201.20x = 39,357,364,260,760,704 - Step 5: Solve for x
x = 39,357,364,260,760,704/168,403,201.20 - Step 6: Final answer
x = 233,709,121.80
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1.5x scale
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.