Finding the Fourth Proportional to 128,017,852.37, 192,018,806.93 and 78,843,063.06
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Solution
The fourth proportional to 128,017,852.37, 192,018,806.93 and 78,843,063.06 is: 118,259,685.06
Step by Step Solution
- Step 1: Write the proportion equation
128,017,852.37 : 192,018,806.93 = 78,843,063.06 : x - Step 2: Convert to fraction form
128,017,852.37/192,018,806.93 = 78,843,063.06/x - Step 3: Cross multiply
128,017,852.37x = 192,018,806.93 × 78,843,063.06 - Step 4: Simplify right side
128,017,852.37x = 15,139,350,903,487,956 - Step 5: Solve for x
x = 15,139,350,903,487,956/128,017,852.37 - Step 6: Final answer
x = 118,259,685.06
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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.