Finding the Fourth Proportional to 168,438,615.70, 252,657,923.55 and 40,787,799.70
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Solution
The fourth proportional to 168,438,615.70, 252,657,923.55 and 40,787,799.70 is: 61,181,699.55
Step by Step Solution
- Step 1: Write the proportion equation
168,438,615.70 : 252,657,923.55 = 40,787,799.70 : x - Step 2: Convert to fraction form
168,438,615.70/252,657,923.55 = 40,787,799.70/x - Step 3: Cross multiply
168,438,615.70x = 252,657,923.55 × 40,787,799.70 - Step 4: Simplify right side
168,438,615.70x = 10,305,360,778,375,314 - Step 5: Solve for x
x = 10,305,360,778,375,314/168,438,615.70 - Step 6: Final answer
x = 61,181,699.55
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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.