Finding the Fourth Proportional to 128,726,824.80, 193,090,237.20 and 74,307,266.40
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Solution
The fourth proportional to 128,726,824.80, 193,090,237.20 and 74,307,266.40 is: 111,460,899.60
Step by Step Solution
- Step 1: Write the proportion equation
128,726,824.80 : 193,090,237.20 = 74,307,266.40 : x - Step 2: Convert to fraction form
128,726,824.80/193,090,237.20 = 74,307,266.40/x - Step 3: Cross multiply
128,726,824.80x = 193,090,237.20 × 74,307,266.40 - Step 4: Simplify right side
128,726,824.80x = 14,348,007,694,859,590 - Step 5: Solve for x
x = 14,348,007,694,859,590/128,726,824.80 - Step 6: Final answer
x = 111,460,899.60
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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.