Finding the Fourth Proportional to 153,281,879.40, 211,497,416.76 and 88,079,186.28
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Solution
The fourth proportional to 153,281,879.40, 211,497,416.76 and 88,079,186.28 is: 121,531,132.33
Step by Step Solution
- Step 1: Write the proportion equation
153,281,879.40 : 211,497,416.76 = 88,079,186.28 : x - Step 2: Convert to fraction form
153,281,879.40/211,497,416.76 = 88,079,186.28/x - Step 3: Cross multiply
153,281,879.40x = 211,497,416.76 × 88,079,186.28 - Step 4: Simplify right side
153,281,879.40x = 18,628,520,368,542,832 - Step 5: Solve for x
x = 18,628,520,368,542,832/153,281,879.40 - Step 6: Final answer
x = 121,531,132.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.