Finding the Fourth Proportional to 128,587,648, 177,451,023.36 and 70,644,628.48
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Solution
The fourth proportional to 128,587,648, 177,451,023.36 and 70,644,628.48 is: 97,489,625.28
Step by Step Solution
- Step 1: Write the proportion equation
128,587,648 : 177,451,023.36 = 70,644,628.48 : x - Step 2: Convert to fraction form
128,587,648/177,451,023.36 = 70,644,628.48/x - Step 3: Cross multiply
128,587,648x = 177,451,023.36 × 70,644,628.48 - Step 4: Simplify right side
128,587,648x = 12,535,961,618,663,004 - Step 5: Solve for x
x = 12,535,961,618,663,004/128,587,648 - Step 6: Final answer
x = 97,489,625.28
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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.