Finding the Fourth Proportional to 143,765,425.20, 215,648,137.80 and 98,415,793.20
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Solution
The fourth proportional to 143,765,425.20, 215,648,137.80 and 98,415,793.20 is: 147,623,689.80
Step by Step Solution
- Step 1: Write the proportion equation
143,765,425.20 : 215,648,137.80 = 98,415,793.20 : x - Step 2: Convert to fraction form
143,765,425.20/215,648,137.80 = 98,415,793.20/x - Step 3: Cross multiply
143,765,425.20x = 215,648,137.80 × 98,415,793.20 - Step 4: Simplify right side
143,765,425.20x = 21,223,182,533,689,904 - Step 5: Solve for x
x = 21,223,182,533,689,904/143,765,425.20 - Step 6: Final answer
x = 147,623,689.80
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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.