Finding the Fourth Proportional to 98,415,070.80, 147,622,606.20 and 72,905,902.80
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Solution
The fourth proportional to 98,415,070.80, 147,622,606.20 and 72,905,902.80 is: 109,358,854.20
Step by Step Solution
- Step 1: Write the proportion equation
98,415,070.80 : 147,622,606.20 = 72,905,902.80 : x - Step 2: Convert to fraction form
98,415,070.80/147,622,606.20 = 72,905,902.80/x - Step 3: Cross multiply
98,415,070.80x = 147,622,606.20 × 72,905,902.80 - Step 4: Simplify right side
98,415,070.80x = 10,762,559,378,699,876 - Step 5: Solve for x
x = 10,762,559,378,699,876/98,415,070.80 - Step 6: Final answer
x = 109,358,854.20
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1.5x scale
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.