Finding the Fourth Proportional to 153,793,431.32, 212,236,928.64 and 84,177,317.52
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Solution
The fourth proportional to 153,793,431.32, 212,236,928.64 and 84,177,317.52 is: 116,165,789.26
Step by Step Solution
- Step 1: Write the proportion equation
153,793,431.32 : 212,236,928.64 = 84,177,317.52 : x - Step 2: Convert to fraction form
153,793,431.32/212,236,928.64 = 84,177,317.52/x - Step 3: Cross multiply
153,793,431.32x = 212,236,928.64 × 84,177,317.52 - Step 4: Simplify right side
153,793,431.32x = 17,865,535,331,598,860 - Step 5: Solve for x
x = 17,865,535,331,598,860/153,793,431.32 - Step 6: Final answer
x = 116,165,789.26
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.