Finding the Fourth Proportional to 99,692,020.80, 149,286,088.80 and 79,536,628.80
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Solution
The fourth proportional to 99,692,020.80, 149,286,088.80 and 79,536,628.80 is: 119,103,937.65
Step by Step Solution
- Step 1: Write the proportion equation
99,692,020.80 : 149,286,088.80 = 79,536,628.80 : x - Step 2: Convert to fraction form
99,692,020.80/149,286,088.80 = 79,536,628.80/x - Step 3: Cross multiply
99,692,020.80x = 149,286,088.80 × 79,536,628.80 - Step 4: Simplify right side
99,692,020.80x = 11,873,712,229,889,438 - Step 5: Solve for x
x = 11,873,712,229,889,438/99,692,020.80 - Step 6: Final answer
x = 119,103,937.65
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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.