Finding the Fourth Proportional to 153,405,070.36, 211,697,599.60 and 83,790,432.80
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Solution
The fourth proportional to 153,405,070.36, 211,697,599.60 and 83,790,432.80 is: 115,630,033.95
Step by Step Solution
- Step 1: Write the proportion equation
153,405,070.36 : 211,697,599.60 = 83,790,432.80 : x - Step 2: Convert to fraction form
153,405,070.36/211,697,599.60 = 83,790,432.80/x - Step 3: Cross multiply
153,405,070.36x = 211,697,599.60 × 83,790,432.80 - Step 4: Simplify right side
153,405,070.36x = 17,738,233,493,205,106 - Step 5: Solve for x
x = 17,738,233,493,205,106/153,405,070.36 - Step 6: Final answer
x = 115,630,033.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.