Finding the Fourth Proportional to 153,863,986.12, 212,332,643.66 and 83,300,339.99
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Solution
The fourth proportional to 153,863,986.12, 212,332,643.66 and 83,300,339.99 is: 114,954,654.79
Step by Step Solution
- Step 1: Write the proportion equation
153,863,986.12 : 212,332,643.66 = 83,300,339.99 : x - Step 2: Convert to fraction form
153,863,986.12/212,332,643.66 = 83,300,339.99/x - Step 3: Cross multiply
153,863,986.12x = 212,332,643.66 × 83,300,339.99 - Step 4: Simplify right side
153,863,986.12x = 17,687,381,408,592,602 - Step 5: Solve for x
x = 17,687,381,408,592,602/153,863,986.12 - Step 6: Final answer
x = 114,954,654.79
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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.