Finding the Fourth Proportional to 125,473,511.80, 188,210,267.70 and 99,645,479.20
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Solution
The fourth proportional to 125,473,511.80, 188,210,267.70 and 99,645,479.20 is: 149,468,218.80
Step by Step Solution
- Step 1: Write the proportion equation
125,473,511.80 : 188,210,267.70 = 99,645,479.20 : x - Step 2: Convert to fraction form
125,473,511.80/188,210,267.70 = 99,645,479.20/x - Step 3: Cross multiply
125,473,511.80x = 188,210,267.70 × 99,645,479.20 - Step 4: Simplify right side
125,473,511.80x = 18,754,302,315,326,780 - Step 5: Solve for x
x = 18,754,302,315,326,780/125,473,511.80 - Step 6: Final answer
x = 149,468,218.80
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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.