Finding the Fourth Proportional to 139,628,077.68, 192,684,909.60 and 76,902,970.80
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Solution
The fourth proportional to 139,628,077.68, 192,684,909.60 and 76,902,970.80 is: 106,125,087.61
Step by Step Solution
- Step 1: Write the proportion equation
139,628,077.68 : 192,684,909.60 = 76,902,970.80 : x - Step 2: Convert to fraction form
139,628,077.68/192,684,909.60 = 76,902,970.80/x - Step 3: Cross multiply
139,628,077.68x = 192,684,909.60 × 76,902,970.80 - Step 4: Simplify right side
139,628,077.68x = 14,818,041,976,569,438 - Step 5: Solve for x
x = 14,818,041,976,569,438/139,628,077.68 - Step 6: Final answer
x = 106,125,087.61
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.