Finding the Fourth Proportional to 120,584,811.60, 180,877,217.40 and 74,668,309.20
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Solution
The fourth proportional to 120,584,811.60, 180,877,217.40 and 74,668,309.20 is: 112,002,463.80
Step by Step Solution
- Step 1: Write the proportion equation
120,584,811.60 : 180,877,217.40 = 74,668,309.20 : x - Step 2: Convert to fraction form
120,584,811.60/180,877,217.40 = 74,668,309.20/x - Step 3: Cross multiply
120,584,811.60x = 180,877,217.40 × 74,668,309.20 - Step 4: Simplify right side
120,584,811.60x = 13,505,795,996,058,822 - Step 5: Solve for x
x = 13,505,795,996,058,822/120,584,811.60 - Step 6: Final answer
x = 112,002,463.80
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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.