Finding the Fourth Proportional to 143,953.80, 215,930.70 and 130,175.70
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Solution
The fourth proportional to 143,953.80, 215,930.70 and 130,175.70 is: 195,263.55
Step by Step Solution
- Step 1: Write the proportion equation
143,953.80 : 215,930.70 = 130,175.70 : x - Step 2: Convert to fraction form
143,953.80/215,930.70 = 130,175.70/x - Step 3: Cross multiply
143,953.80x = 215,930.70 × 130,175.70 - Step 4: Simplify right side
143,953.80x = 28,108,930,023.99 - Step 5: Solve for x
x = 28,108,930,023.99/143,953.80 - Step 6: Final answer
x = 195,263.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.