Finding the Fourth Proportional to 136,207,281.36, 187,970,017.84 and 74,331,605.44
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Solution
The fourth proportional to 136,207,281.36, 187,970,017.84 and 74,331,605.44 is: 102,579,781.79
Step by Step Solution
- Step 1: Write the proportion equation
136,207,281.36 : 187,970,017.84 = 74,331,605.44 : x - Step 2: Convert to fraction form
136,207,281.36/187,970,017.84 = 74,331,605.44/x - Step 3: Cross multiply
136,207,281.36x = 187,970,017.84 × 74,331,605.44 - Step 4: Simplify right side
136,207,281.36x = 13,972,113,200,632,640 - Step 5: Solve for x
x = 13,972,113,200,632,640/136,207,281.36 - Step 6: Final answer
x = 102,579,781.79
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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.