Finding the Fourth Proportional to 135,800,969.28, 187,409,864.32 and 76,272,755.76
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Solution
The fourth proportional to 135,800,969.28, 187,409,864.32 and 76,272,755.76 is: 105,258,945.38
Step by Step Solution
- Step 1: Write the proportion equation
135,800,969.28 : 187,409,864.32 = 76,272,755.76 : x - Step 2: Convert to fraction form
135,800,969.28/187,409,864.32 = 76,272,755.76/x - Step 3: Cross multiply
135,800,969.28x = 187,409,864.32 × 76,272,755.76 - Step 4: Simplify right side
135,800,969.28x = 14,294,266,808,294,098 - Step 5: Solve for x
x = 14,294,266,808,294,098/135,800,969.28 - Step 6: Final answer
x = 105,258,945.38
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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.