Finding the Fourth Proportional to 128,879,779.88, 193,259,734.14 and 46,941,616.28
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Solution
The fourth proportional to 128,879,779.88, 193,259,734.14 and 46,941,616.28 is: 70,390,594.17
Step by Step Solution
- Step 1: Write the proportion equation
128,879,779.88 : 193,259,734.14 = 46,941,616.28 : x - Step 2: Convert to fraction form
128,879,779.88/193,259,734.14 = 46,941,616.28/x - Step 3: Cross multiply
128,879,779.88x = 193,259,734.14 × 46,941,616.28 - Step 4: Simplify right side
128,879,779.88x = 9,071,924,282,374,696 - Step 5: Solve for x
x = 9,071,924,282,374,696/128,879,779.88 - Step 6: Final answer
x = 70,390,594.17
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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.