Finding the Fourth Proportional to 128,901,697.20, 193,069,110.60 and 68,246,564.40
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Solution
The fourth proportional to 128,901,697.20, 193,069,110.60 and 68,246,564.40 is: 102,219,782.80
Step by Step Solution
- Step 1: Write the proportion equation
128,901,697.20 : 193,069,110.60 = 68,246,564.40 : x - Step 2: Convert to fraction form
128,901,697.20/193,069,110.60 = 68,246,564.40/x - Step 3: Cross multiply
128,901,697.20x = 193,069,110.60 × 68,246,564.40 - Step 4: Simplify right side
128,901,697.20x = 13,176,303,490,213,624 - Step 5: Solve for x
x = 13,176,303,490,213,624/128,901,697.20 - Step 6: Final answer
x = 102,219,782.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.