Finding the Fourth Proportional to 128,405,445.62, 192,567,708.86 and 42,123,746.66
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Solution
The fourth proportional to 128,405,445.62, 192,567,708.86 and 42,123,746.66 is: 63,172,347.12
Step by Step Solution
- Step 1: Write the proportion equation
128,405,445.62 : 192,567,708.86 = 42,123,746.66 : x - Step 2: Convert to fraction form
128,405,445.62/192,567,708.86 = 42,123,746.66/x - Step 3: Cross multiply
128,405,445.62x = 192,567,708.86 × 42,123,746.66 - Step 4: Simplify right side
128,405,445.62x = 8,111,673,382,915,277 - Step 5: Solve for x
x = 8,111,673,382,915,277/128,405,445.62 - Step 6: Final answer
x = 63,172,347.12
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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.