Finding the Fourth Proportional to 125,172,022.20, 187,758,033.30 and 79,255,519.80
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Solution
The fourth proportional to 125,172,022.20, 187,758,033.30 and 79,255,519.80 is: 118,883,279.70
Step by Step Solution
- Step 1: Write the proportion equation
125,172,022.20 : 187,758,033.30 = 79,255,519.80 : x - Step 2: Convert to fraction form
125,172,022.20/187,758,033.30 = 79,255,519.80/x - Step 3: Cross multiply
125,172,022.20x = 187,758,033.30 × 79,255,519.80 - Step 4: Simplify right side
125,172,022.20x = 14,880,860,525,817,210 - Step 5: Solve for x
x = 14,880,860,525,817,210/125,172,022.20 - Step 6: Final answer
x = 118,883,279.70
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1.5x scale
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.