Finding the Fourth Proportional to 156,712,134.20, 235,068,201.30 and 139,990,623.80
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Solution
The fourth proportional to 156,712,134.20, 235,068,201.30 and 139,990,623.80 is: 209,985,935.70
Step by Step Solution
- Step 1: Write the proportion equation
156,712,134.20 : 235,068,201.30 = 139,990,623.80 : x - Step 2: Convert to fraction form
156,712,134.20/235,068,201.30 = 139,990,623.80/x - Step 3: Cross multiply
156,712,134.20x = 235,068,201.30 × 139,990,623.80 - Step 4: Simplify right side
156,712,134.20x = 32,907,344,135,530,976 - Step 5: Solve for x
x = 32,907,344,135,530,976/156,712,134.20 - Step 6: Final answer
x = 209,985,935.70
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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.