Finding the Fourth Proportional to 139,410,637.80, 209,115,956.70 and 48,504,013.80
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Solution
The fourth proportional to 139,410,637.80, 209,115,956.70 and 48,504,013.80 is: 72,756,020.70
Step by Step Solution
- Step 1: Write the proportion equation
139,410,637.80 : 209,115,956.70 = 48,504,013.80 : x - Step 2: Convert to fraction form
139,410,637.80/209,115,956.70 = 48,504,013.80/x - Step 3: Cross multiply
139,410,637.80x = 209,115,956.70 × 48,504,013.80 - Step 4: Simplify right side
139,410,637.80x = 10,142,963,249,577,002 - Step 5: Solve for x
x = 10,142,963,249,577,002/139,410,637.80 - Step 6: Final answer
x = 72,756,020.70
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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.