Finding the Fourth Proportional to 98,931,425.80, 148,397,138.70 and 73,103,393.20
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Solution
The fourth proportional to 98,931,425.80, 148,397,138.70 and 73,103,393.20 is: 109,655,089.80
Step by Step Solution
- Step 1: Write the proportion equation
98,931,425.80 : 148,397,138.70 = 73,103,393.20 : x - Step 2: Convert to fraction form
98,931,425.80/148,397,138.70 = 73,103,393.20/x - Step 3: Cross multiply
98,931,425.80x = 148,397,138.70 × 73,103,393.20 - Step 4: Simplify right side
98,931,425.80x = 10,848,334,380,141,036 - Step 5: Solve for x
x = 10,848,334,380,141,036/98,931,425.80 - Step 6: Final answer
x = 109,655,089.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.