Finding the Fourth Proportional to 128,477,861.10, 177,302,574.27 and 69,742,933.74
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Solution
The fourth proportional to 128,477,861.10, 177,302,574.27 and 69,742,933.74 is: 96,246,945.45
Step by Step Solution
- Step 1: Write the proportion equation
128,477,861.10 : 177,302,574.27 = 69,742,933.74 : x - Step 2: Convert to fraction form
128,477,861.10/177,302,574.27 = 69,742,933.74/x - Step 3: Cross multiply
128,477,861.10x = 177,302,574.27 × 69,742,933.74 - Step 4: Simplify right side
128,477,861.10x = 12,365,601,689,244,038 - Step 5: Solve for x
x = 12,365,601,689,244,038/128,477,861.10 - Step 6: Final answer
x = 96,246,945.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.