Finding the Fourth Proportional to 103,399,755.36, 142,699,866.56 and 56,998,263.84
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Solution
The fourth proportional to 103,399,755.36, 142,699,866.56 and 56,998,263.84 is: 78,662,126.58
Step by Step Solution
- Step 1: Write the proportion equation
103,399,755.36 : 142,699,866.56 = 56,998,263.84 : x - Step 2: Convert to fraction form
103,399,755.36/142,699,866.56 = 56,998,263.84/x - Step 3: Cross multiply
103,399,755.36x = 142,699,866.56 × 56,998,263.84 - Step 4: Simplify right side
103,399,755.36x = 8,133,644,644,119,674 - Step 5: Solve for x
x = 8,133,644,644,119,674/103,399,755.36 - Step 6: Final answer
x = 78,662,126.58
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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.