Finding the Fourth Proportional to 168,403,207.70, 252,604,811.55 and 155,806,087.70
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Solution
The fourth proportional to 168,403,207.70, 252,604,811.55 and 155,806,087.70 is: 233,709,131.55
Step by Step Solution
- Step 1: Write the proportion equation
168,403,207.70 : 252,604,811.55 = 155,806,087.70 : x - Step 2: Convert to fraction form
168,403,207.70/252,604,811.55 = 155,806,087.70/x - Step 3: Cross multiply
168,403,207.70x = 252,604,811.55 × 155,806,087.70 - Step 4: Simplify right side
168,403,207.70x = 39,357,367,421,801,272 - Step 5: Solve for x
x = 39,357,367,421,801,272/168,403,207.70 - Step 6: Final answer
x = 233,709,131.55
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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.