Finding the Fourth Proportional to 103,601,412.12, 142,966,201.86 and 57,190,669.68
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Solution
The fourth proportional to 103,601,412.12, 142,966,201.86 and 57,190,669.68 is: 78,921,055.79
Step by Step Solution
- Step 1: Write the proportion equation
103,601,412.12 : 142,966,201.86 = 57,190,669.68 : x - Step 2: Convert to fraction form
103,601,412.12/142,966,201.86 = 57,190,669.68/x - Step 3: Cross multiply
103,601,412.12x = 142,966,201.86 × 57,190,669.68 - Step 4: Simplify right side
103,601,412.12x = 8,176,332,825,979,462 - Step 5: Solve for x
x = 8,176,332,825,979,462/103,601,412.12 - Step 6: Final answer
x = 78,921,055.79
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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.