Finding the Fourth Proportional to 128,193,159.36, 192,289,739.04 and 31,148,368.32
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Solution
The fourth proportional to 128,193,159.36, 192,289,739.04 and 31,148,368.32 is: 46,722,552.48
Step by Step Solution
- Step 1: Write the proportion equation
128,193,159.36 : 192,289,739.04 = 31,148,368.32 : x - Step 2: Convert to fraction form
128,193,159.36/192,289,739.04 = 31,148,368.32/x - Step 3: Cross multiply
128,193,159.36x = 192,289,739.04 × 31,148,368.32 - Step 4: Simplify right side
128,193,159.36x = 5,989,511,615,774,603 - Step 5: Solve for x
x = 5,989,511,615,774,603/128,193,159.36 - Step 6: Final answer
x = 46,722,552.48
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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.