Finding the Fourth Proportional to 143,038.36, 197,395.14 and 79,378.84
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Solution
The fourth proportional to 143,038.36, 197,395.14 and 79,378.84 is: 109,544.02
Step by Step Solution
- Step 1: Write the proportion equation
143,038.36 : 197,395.14 = 79,378.84 : x - Step 2: Convert to fraction form
143,038.36/197,395.14 = 79,378.84/x - Step 3: Cross multiply
143,038.36x = 197,395.14 × 79,378.84 - Step 4: Simplify right side
143,038.36x = 15,668,997,234.84 - Step 5: Solve for x
x = 15,668,997,234.84/143,038.36 - Step 6: Final answer
x = 109,544.02
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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.