Finding the Fourth Proportional to 134,830,485.20, 186,013,126.26 and 78,305,608.53
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Solution
The fourth proportional to 134,830,485.20, 186,013,126.26 and 78,305,608.53 is: 108,030,991.84
Step by Step Solution
- Step 1: Write the proportion equation
134,830,485.20 : 186,013,126.26 = 78,305,608.53 : x - Step 2: Convert to fraction form
134,830,485.20/186,013,126.26 = 78,305,608.53/x - Step 3: Cross multiply
134,830,485.20x = 186,013,126.26 × 78,305,608.53 - Step 4: Simplify right side
134,830,485.20x = 14,565,871,046,357,022 - Step 5: Solve for x
x = 14,565,871,046,357,022/134,830,485.20 - Step 6: Final answer
x = 108,030,991.84
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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.