Finding the Fourth Proportional to 80,142,661.20, 120,213,991.80 and 46,130,437.20
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Solution
The fourth proportional to 80,142,661.20, 120,213,991.80 and 46,130,437.20 is: 69,195,655.80
Step by Step Solution
- Step 1: Write the proportion equation
80,142,661.20 : 120,213,991.80 = 46,130,437.20 : x - Step 2: Convert to fraction form
80,142,661.20/120,213,991.80 = 46,130,437.20/x - Step 3: Cross multiply
80,142,661.20x = 120,213,991.80 × 46,130,437.20 - Step 4: Simplify right side
80,142,661.20x = 5,545,523,999,291,215 - Step 5: Solve for x
x = 5,545,523,999,291,215/80,142,661.20 - Step 6: Final answer
x = 69,195,655.80
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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.