Finding the Fourth Proportional to 145,967,726.07, 201,435,995.84 and 78,986,684.79
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Solution
The fourth proportional to 145,967,726.07, 201,435,995.84 and 78,986,684.79 is: 109,001,913.89
Step by Step Solution
- Step 1: Write the proportion equation
145,967,726.07 : 201,435,995.84 = 78,986,684.79 : x - Step 2: Convert to fraction form
145,967,726.07/201,435,995.84 = 78,986,684.79/x - Step 3: Cross multiply
145,967,726.07x = 201,435,995.84 × 78,986,684.79 - Step 4: Simplify right side
145,967,726.07x = 15,910,761,508,378,900 - Step 5: Solve for x
x = 15,910,761,508,378,900/145,967,726.07 - Step 6: Final answer
x = 109,001,913.89
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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.