Finding the Fourth Proportional to 121,874,365.98, 168,186,944.45 and 66,119,783.51
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Solution
The fourth proportional to 121,874,365.98, 168,186,944.45 and 66,119,783.51 is: 91,245,474.52
Step by Step Solution
- Step 1: Write the proportion equation
121,874,365.98 : 168,186,944.45 = 66,119,783.51 : x - Step 2: Convert to fraction form
121,874,365.98/168,186,944.45 = 66,119,783.51/x - Step 3: Cross multiply
121,874,365.98x = 168,186,944.45 × 66,119,783.51 - Step 4: Simplify right side
121,874,365.98x = 11,120,484,355,070,862 - Step 5: Solve for x
x = 11,120,484,355,070,862/121,874,365.98 - Step 6: Final answer
x = 91,245,474.52
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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.