Finding the Fourth Proportional to 128,006,897.58, 176,649,983.64 and 69,269,556.36
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Solution
The fourth proportional to 128,006,897.58, 176,649,983.64 and 69,269,556.36 is: 95,592,239.40
Step by Step Solution
- Step 1: Write the proportion equation
128,006,897.58 : 176,649,983.64 = 69,269,556.36 : x - Step 2: Convert to fraction form
128,006,897.58/176,649,983.64 = 69,269,556.36/x - Step 3: Cross multiply
128,006,897.58x = 176,649,983.64 × 69,269,556.36 - Step 4: Simplify right side
128,006,897.58x = 12,236,465,997,744,056 - Step 5: Solve for x
x = 12,236,465,997,744,056/128,006,897.58 - Step 6: Final answer
x = 95,592,239.40
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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.