Finding the Fourth Proportional to 120,970,135.20, 181,455,202.80 and 40,191,103.20
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Solution
The fourth proportional to 120,970,135.20, 181,455,202.80 and 40,191,103.20 is: 60,286,654.80
Step by Step Solution
- Step 1: Write the proportion equation
120,970,135.20 : 181,455,202.80 = 40,191,103.20 : x - Step 2: Convert to fraction form
120,970,135.20/181,455,202.80 = 40,191,103.20/x - Step 3: Cross multiply
120,970,135.20x = 181,455,202.80 × 40,191,103.20 - Step 4: Simplify right side
120,970,135.20x = 7,292,884,781,911,730 - Step 5: Solve for x
x = 7,292,884,781,911,730/120,970,135.20 - Step 6: Final answer
x = 60,286,654.80
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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.