Finding the Fourth Proportional to 128,724,835.20, 193,311,201.60 and 68,258,659.20
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Solution
The fourth proportional to 128,724,835.20, 193,311,201.60 and 68,258,659.20 is: 102,506,741.68
Step by Step Solution
- Step 1: Write the proportion equation
128,724,835.20 : 193,311,201.60 = 68,258,659.20 : x - Step 2: Convert to fraction form
128,724,835.20/193,311,201.60 = 68,258,659.20/x - Step 3: Cross multiply
128,724,835.20x = 193,311,201.60 × 68,258,659.20 - Step 4: Simplify right side
128,724,835.20x = 13,195,163,429,556,894 - Step 5: Solve for x
x = 13,195,163,429,556,894/128,724,835.20 - Step 6: Final answer
x = 102,506,741.68
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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.