Finding the Fourth Proportional to 117,420,010.20, 176,130,015.30 and 71,503,507.80
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Solution
The fourth proportional to 117,420,010.20, 176,130,015.30 and 71,503,507.80 is: 107,255,261.70
Step by Step Solution
- Step 1: Write the proportion equation
117,420,010.20 : 176,130,015.30 = 71,503,507.80 : x - Step 2: Convert to fraction form
117,420,010.20/176,130,015.30 = 71,503,507.80/x - Step 3: Cross multiply
117,420,010.20x = 176,130,015.30 × 71,503,507.80 - Step 4: Simplify right side
117,420,010.20x = 12,593,913,922,817,670 - Step 5: Solve for x
x = 12,593,913,922,817,670/117,420,010.20 - Step 6: Final answer
x = 107,255,261.70
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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.