Finding the Fourth Proportional to 128,734,533.83, 177,652,421.73 and 69,997,211.04
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Solution
The fourth proportional to 128,734,533.83, 177,652,421.73 and 69,997,211.04 is: 96,595,479.75
Step by Step Solution
- Step 1: Write the proportion equation
128,734,533.83 : 177,652,421.73 = 69,997,211.04 : x - Step 2: Convert to fraction form
128,734,533.83/177,652,421.73 = 69,997,211.04/x - Step 3: Cross multiply
128,734,533.83x = 177,652,421.73 × 69,997,211.04 - Step 4: Simplify right side
128,734,533.83x = 12,435,174,055,601,892 - Step 5: Solve for x
x = 12,435,174,055,601,892/128,734,533.83 - Step 6: Final answer
x = 96,595,479.75
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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.