Finding the Fourth Proportional to 99,856,237.20, 149,784,355.80 and 84,739,693.20
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Solution
The fourth proportional to 99,856,237.20, 149,784,355.80 and 84,739,693.20 is: 127,109,539.80
Step by Step Solution
- Step 1: Write the proportion equation
99,856,237.20 : 149,784,355.80 = 84,739,693.20 : x - Step 2: Convert to fraction form
99,856,237.20/149,784,355.80 = 84,739,693.20/x - Step 3: Cross multiply
99,856,237.20x = 149,784,355.80 × 84,739,693.20 - Step 4: Simplify right side
99,856,237.20x = 12,692,680,356,651,642 - Step 5: Solve for x
x = 12,692,680,356,651,642/99,856,237.20 - Step 6: Final answer
x = 127,109,539.80
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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.