Finding the Fourth Proportional to 163,128,135.02, 225,121,698.17 and 100,440,397.73
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Solution
The fourth proportional to 163,128,135.02, 225,121,698.17 and 100,440,397.73 is: 138,610,748.53
Step by Step Solution
- Step 1: Write the proportion equation
163,128,135.02 : 225,121,698.17 = 100,440,397.73 : x - Step 2: Convert to fraction form
163,128,135.02/225,121,698.17 = 100,440,397.73/x - Step 3: Cross multiply
163,128,135.02x = 225,121,698.17 × 100,440,397.73 - Step 4: Simplify right side
163,128,135.02x = 22,611,312,900,220,000 - Step 5: Solve for x
x = 22,611,312,900,220,000/163,128,135.02 - Step 6: Final answer
x = 138,610,748.53
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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.