Finding the Fourth Proportional to 139,510.19, 208,317.77 and 135,726.79
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Solution
The fourth proportional to 139,510.19, 208,317.77 and 135,726.79 is: 202,668.37
Step by Step Solution
- Step 1: Write the proportion equation
139,510.19 : 208,317.77 = 135,726.79 : x - Step 2: Convert to fraction form
139,510.19/208,317.77 = 135,726.79/x - Step 3: Cross multiply
139,510.19x = 208,317.77 × 135,726.79 - Step 4: Simplify right side
139,510.19x = 28,274,302,222.06 - Step 5: Solve for x
x = 28,274,302,222.06/139,510.19 - Step 6: Final answer
x = 202,668.37
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.