Finding the Fourth Proportional to 99,643,513.80, 149,465,270.70 and 74,134,345.80
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Solution
The fourth proportional to 99,643,513.80, 149,465,270.70 and 74,134,345.80 is: 111,201,518.70
Step by Step Solution
- Step 1: Write the proportion equation
99,643,513.80 : 149,465,270.70 = 74,134,345.80 : x - Step 2: Convert to fraction form
99,643,513.80/149,465,270.70 = 74,134,345.80/x - Step 3: Cross multiply
99,643,513.80x = 149,465,270.70 × 74,134,345.80 - Step 4: Simplify right side
99,643,513.80x = 11,080,510,063,164,406 - Step 5: Solve for x
x = 11,080,510,063,164,406/99,643,513.80 - Step 6: Final answer
x = 111,201,518.70
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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.