Finding the Fourth Proportional to 149,781,841.64, 206,699,221.53 and 83,702,339.97
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Solution
The fourth proportional to 149,781,841.64, 206,699,221.53 and 83,702,339.97 is: 115,509,385.67
Step by Step Solution
- Step 1: Write the proportion equation
149,781,841.64 : 206,699,221.53 = 83,702,339.97 : x - Step 2: Convert to fraction form
149,781,841.64/206,699,221.53 = 83,702,339.97/x - Step 3: Cross multiply
149,781,841.64x = 206,699,221.53 × 83,702,339.97 - Step 4: Simplify right side
149,781,841.64x = 17,301,208,512,038,404 - Step 5: Solve for x
x = 17,301,208,512,038,404/149,781,841.64 - Step 6: Final answer
x = 115,509,385.67
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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.