Finding the Fourth Proportional to 203,472,129.60, 305,226,856.80 and 67,157,812.80
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Solution
The fourth proportional to 203,472,129.60, 305,226,856.80 and 67,157,812.80 is: 100,742,878.89
Step by Step Solution
- Step 1: Write the proportion equation
203,472,129.60 : 305,226,856.80 = 67,157,812.80 : x - Step 2: Convert to fraction form
203,472,129.60/305,226,856.80 = 67,157,812.80/x - Step 3: Cross multiply
203,472,129.60x = 305,226,856.80 × 67,157,812.80 - Step 4: Simplify right side
203,472,129.60x = 20,498,368,110,506,808 - Step 5: Solve for x
x = 20,498,368,110,506,808/203,472,129.60 - Step 6: Final answer
x = 100,742,878.89
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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.