Finding the Fourth Proportional to 83,219,837.20, 124,829,755.80 and 73,142,141.20
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Solution
The fourth proportional to 83,219,837.20, 124,829,755.80 and 73,142,141.20 is: 109,713,211.80
Step by Step Solution
- Step 1: Write the proportion equation
83,219,837.20 : 124,829,755.80 = 73,142,141.20 : x - Step 2: Convert to fraction form
83,219,837.20/124,829,755.80 = 73,142,141.20/x - Step 3: Cross multiply
83,219,837.20x = 124,829,755.80 × 73,142,141.20 - Step 4: Simplify right side
83,219,837.20x = 9,130,315,624,685,120 - Step 5: Solve for x
x = 9,130,315,624,685,120/83,219,837.20 - Step 6: Final answer
x = 109,713,211.80
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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.